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榨干这台 NAS 第 003 话-硬链接

这是一系列关于 NAS 的文章,系列的名称你们也看到了:「榨干这台 NAS」。我将尽可能详细的介绍 NAS 相关的知识,帮助你最大限度的发挥你的手中 NAS 的威力!

上一话中已经介绍了下载工具,想必很多人在接触 NAS 的时候也或多或少会接触到 PT 吧,今天我就来介绍一个 PT 利器:硬链接。

起因

什么是 PT 呢,大家可以自己 Google,或者之后我再来讲。在 PT 下载中,不是说你下载完就好了,而是秉承着我为人人,人人为我的精神,在下载完成后最好一直保持做种,这样在别人下载这个资源的时候,也可以有较快的速度。

但是做种的时候,有一个问题,就是下载好的文件,不能改名也不能修改目录结构。这样一来,对后期的刮削操作来说是完全不能接受的。所以我们就要用到「硬链接」。

那么什么是硬链接呢?与硬链接相对应的,还有一种软链接,软链接其实就相当于 Windows 中的快捷方式,只是一个指向源文件的文件。在我们删除源文件后,快捷方式将无法使用。而硬链接就不一样了,你同样可以像创建软链接一样创建多个硬链接。但是当你删除源文件后,硬链接还是可以正常使用,和普通文件没有区别。只有当你删除所有的源文件和硬链接后,这个文件才算是真正的被删除。并且多个硬链接和源文件只会占用一个文件的空间。

举例来说:

  1. 你下载了最新的电影 不能说的秘密2.mp4,它存放在:Downloads/qBittorrentDownloads/media/movie/不能说的秘密/不能说的秘密2.mp4

  2. 你就可以创建一个硬链接,在另一个文件夹下面:media/movie/不能说的秘密2(2034)/不能说的秘密2(2034).mp4

  3. 这时候,你可以将 Downloads/qBittorrentDownloads/media/movie/不能说的秘密/不能说的秘密2.mp4 删除,media/movie/不能说的秘密2(2034)/不能说的秘密2(2034).mp4 仍然可以使用,反过来也是一样。但是不能将两个文件同时删除;

  4. 如果你创建的硬链接源文件发生了变化,你的所有硬链接同时也会将变化同步,例外的:文件名的变化将不会同步。

如何创建硬链接

简单的方法是使用 ln 命令,以上面的例子来说,只需要执行以下命令:

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ln /Downloads/qBittorrentDownloads/media/movie/不能说的秘密/不能说的秘密2.mp4 /media/movie/不能说的秘密2(2034)/不能说的秘密2(2034).mp4

就可以创建一个硬链接。

但是这样对于一个文件来说还好说,对于众多的电影来说,却是一项大工程。所以我们需要用到 hLink 这一硬链接工具。

安装 hLink

在 UNRAID 的应用市场中并没有 hLink,所以无法通过应用市场直接安装。

我们可以直接通过命令来进行安装:

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docker run -d --name hlink \
-e HLINK_HOME=$YOUR_HLINK_HOME_DIR \
-p 9090:9090 \
-v $YOUR_NAS_VOLUME_PATH:$DOCKER_VOLUME_PATH \
likun7981/hlink:latest

在上方的命令中你需要将你要硬链接的源文件的目录和硬链接文件的目录的共同的父目录映射进容器。

在我的机器上,具体命令是这样的:

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docker run -d --name hlink \
-e HLINK_HOME=/share/appdata/hlink \
-p 9090:9090 \
-v /mnt/user:/share \
likun7981/hlink:latest

运行命令后稍等片刻就安装完成了。

使用 hLink

前往浏览器访问「你设备的IP地址:9090」,例如:http://192.168.1.223:9090,即可进入操作页面。

  1. 首先点击「创建配置」

    创建配置.png

  2. 为配置输入一个名字,用于标记这个配置的作用,例如:Movie;

  3. 接下来就要对配置文件进行修改,可以先看一下默认的配置文件:

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    // 重要说明路径地址都请填写 绝对路径!!!!
    export default {
    /**
    * 源路径与目标路径的映射关系
    * 例子:
    * pathsMapping: {
    * '/path/to/exampleSource': '/path/to/exampleDest',
    * '/path/to/exampleSource2': '/path/to/exampleDest2'
    * }
    */
    pathsMapping: {},
    /**
    * 需要包含的后缀,如果与exclude同时配置,则取两者的交集
    * include 留空表示包含所有文件
    *
    * 后缀不够用? 高阶用法: https://hlink.likun.me/other/v2.html#%E6%96%B0%E5%A2%9E%E5%8A%9F%E8%83%BD
    */
    include: [
    'mp4',
    'flv',
    'f4v',
    'webm',
    'm4v',
    'mov',
    'cpk',
    'dirac',
    '3gp',
    '3g2',
    'rm',
    'rmvb',
    'wmv',
    'avi',
    'asf',
    'mpg',
    'mpeg',
    'mpe',
    'vob',
    'mkv',
    'ram',
    'qt',
    'fli',
    'flc',
    'mod',
    'iso',
    ],
    /**
    * 需要排除的后缀,如果与include同时配置,则取两者的交集
    *
    * 后缀不够用? 高阶用法: https://hlink.likun.me/other/v2.html#%E6%96%B0%E5%A2%9E%E5%8A%9F%E8%83%BD
    */
    exclude: [],
    /**
    * @scope 该配置项 hlink 专用
    * 是否保持原有目录结构,为false时则只保存一级目录结构
    * 可选值: true/false
    * 例子:
    * - 源地址目录为:/a
    * - 目标地址目录为: /d
    * - 链接的文件地址为 /a/b/c/z/y/mv.mkv;
    * 如果设置为true 生成的硬链地址为: /d/b/c/z/y/mv.mkv
    * 如果设置为false 生成的硬链地址为:/d/y/mv.mkv
    */
    keepDirStruct: true,
    /**
    * @scope 该配置项 hlink 专用
    * 是否打开缓存,为true表示打开
    * 可选值: true/false
    * 打开后,每次硬链后会把对应文件存入缓存,就算下次删除硬链,也不会进行硬链
    */
    openCache: false,
    /**
    * @scope 该配置项 hlink 专用
    * 是否为独立文件创建同名文件夹,为true表示创建
    * 可选值: true/false
    */
    mkdirIfSingle: true,
    /**
    * @scope 该配置项为 hlink prune 命令专用
    * 是否删除文件及所在目录,为false只会删除文件
    * 可选值: true/false
    */
    deleteDir: false,
    }

    可以到看到大部分配置都已经有的了,我们只要修改部分就行。例如最重要的 pathsMapping 属性。这是时候需要注意,此时填写的路径不是当前宿主机中的路径,而是容器中的路径,你需要根据启动容器时候的目录映射参数来修改相对应的路径。

    例如我的启动参数中映射是:-v /mnt/user:/share,即在宿主机的路径 /mnt/user 等于容器中的 /share,所以我原本电影(源文件)的下载路径:/mnt/user/UNRAID/downloads/qBittorrentDownloads/Media/Movie,这时候就要改为:/share/UNRAID/downloads/qBittorrentDownloads/Media/Movie,原本硬链接的存放位置:/mnt/user/UNRAID/media/Movie,就要更改为:/share/UNRAID/media/Movie

    所以最后我的 pathsMapping 属性就是:

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    pathsMapping: {
    '/share/UNRAID/downloads/qBittorrentDownloads/Media/Movie': '/share/UNRAID/media/Movie'
    },
  4. 然后点击「确定」;

  5. 之后点击「创建任务」

    创建任务.png

  6. 输入任务名称,任务类型选择 硬链(hlink),然后选择你刚刚创建的配置文件,最后点击「确定」;

  7. 最后在任务列表点击你刚刚点击的任务,就可以开始进行创建硬链接了。

需要注意的点

  1. 我在 榨干这台 NAS 第 002 话-下载工具 文章中有提到 qBittorrent 一些使其更好使用的配置(「工具」-「选项」-「下载」勾选「为不完整的文件添加扩展名 .!qB」),为的就是在创建硬链接的时候不将未下载完成的电影包括进去;

  2. 可以为任务设置定时任务,这样就不需要在每次有新电影时再进入 Web 页面进行手动操作了,一般来说一个小时执行一次任务即可;

  3. 我在 榨干这台 NAS 第 000 话-目录结构 中提到电影,电视剧不同类型的影音文件最好可以分文件夹保存,这时候在创建硬链接的时候就需要根据不同的分类创建不同的配置才可以,例如我就根据不同的媒体类型创建了不同的配置:

    hLink.png

  4. 当文件夹中有文件你不想进行硬链接时,可以在 exclude 中添加规则。

参考

https://github.com/likun7981/hlink

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What is this thing 13

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

大铁球

Q: Found this digging around the mouth of a major Caribbean harbor (on my property). Did this come out of a cannon?

在加勒比海的一个主要港口(在我的地皮上)附近挖掘出了这个东西。这是从大炮里射出来的吗?

大铁球

大铁球

A: 100% a cannonball.

100% 是个炮弹。

https://www.reddit.com/r/whatisthisthing/comments/oa55gi/found_this_digging_around_the_mouth_of_a_major/

泡沫

Q: What is this bubbling out of the ground in my yard? Purplish metallic gooey inside. Keeps bubbling even if I dig a thin layer down with a shovel.

我院子里的地面上冒出的是什么东西?里面有紫红色的金属粘稠物。即使我用铲子挖下薄薄的一层,也会一直冒泡。

泡沫

泡沫

泡沫

A: Looks kind of like expanding foam insulation? There is a purple kind that is the same shade. Is it dripping from a roof above?

看起来有点像膨胀泡沫绝缘材料?有一种紫色的,也是同样的颜色。它是从上面的屋顶滴下来的吗?

OP: No structure within 20 feet. It is quite literally bubbling up from the ground

原题主:20 英尺内没有建筑。它确实是从地面上冒出来的。

A: Do you see any large trucks in the vicinity that could be pumping something? It sure looks like injected foam in the way it gets a toughened skin around a soft interior.
Like this, but on a grander scale.

你是否看到附近有任何大型卡车,可能在抽水?从它在柔软的内部周围形成坚硬的表皮的方式来看,它看起来确实像注入的泡沫。

像这样,但规模更大。

泡沫

OP: The construction here is mainly finished except for a retention pond down the street. Haven’t noticed any houses nearby getting work done on the ground or having something pumped.

原题主:除了街边的一个蓄水池,这里的建筑主要已经完工。我没有注意到附近有任何房子在地面上施工,或者有什么东西被抽走了。

A: Well, due to the purple color and behavior of it bubbling up from the ground my next guess is that a contractor disposed of a large cannister of spray foam insulation into the fill that made up your lawn. The recent rains caused settling which caused the cannister to get punctured.
This is certainly possible. I have found all kinds of shit in construction fill in housing developments. Disposed of concrete forms, lumber scraps, paint cans, spray cans, beer bottles/cans etc…
Edit: OP you must dig to China to reveal the source of the mystery!

嗯,由于它的紫色和从地面冒出的行为,我的进一步猜测是,一个承包商将一大罐喷涂泡沫绝缘材料扔进了构成你的草坪的填料中。最近的降雨造成了沉降,导致罐子被刺破。

这当然是可能的。我曾在住宅区的建筑填料中发现各种垃圾。处理过的混凝土模板、木材废料、油漆罐、喷雾罐、啤酒瓶/罐等等。

编辑:题主你必须挖到中国去,才能揭开神秘的源头!

https://www.reddit.com/r/whatisthisthing/comments/ojuu87/what_is_this_bubbling_out_of_the_ground_in_my/

饼干

Q: What are these strands/threads coming out of my crackers?

从我的饼干里出来的这些丝线/线是什么?

饼干

饼干

A: I work in food manufacturing. This is 100% frayed edges of the conveyors that take the crackers through the sheeting process before being transferred to the oven band.
Contact the manufacturer with the codes and date on the box. It will help them in their investigation, and you will most likely get some free stuff.

我从事于食品制造业工作。这 100% 是传送带的边缘磨损产物,这些传送带将饼干在传送到烤炉带之前通过片状加工。

请与制造商联系,提供盒子上的代码和日期。这将有助于他们的调查,而且你很可能会得到一些免费的奖励。

https://www.reddit.com/r/whatisthisthing/comments/oghic0/what_are_these_strandsthreads_coming_out_of_my/

ATM

Q: What are these 2 metal studs on the side of this atm?

这个 ATM 机侧面的两个金属螺柱是什么?

ATM

A: Pretty sure they put those on there to stop this from happening.

很明显,他们把这些放在那里是为了阻止这种情况发生

ATM

ATM

ATM

https://www.reddit.com/r/whatisthisthing/comments/odk775/what_are_these_2_metal_studs_on_the_side_of_this/

金属架子

Q: Found in our new house on the top landing bannister rail. Seems like it’s meant to hold something but not sure what it is?

在我们的新房子里顶楼的栏杆上发现的。看起来它是用来装东西的,但不知道是什么东西?

架子

A: Appears to be a 3M Command hair dryer holder. Though given the location, perhaps previous owners were using it for something else (what I have no idea)

看起来是一个 3M 公司的吹风机支架。但是考虑到在这个位置,也许以前的主人用它来做别的事情(我不知道是什么)。

架子

https://www.reddit.com/r/whatisthisthing/comments/ofigao/found_in_our_new_house_on_the_top_landing/

绒毛

Q: Found inside a musical instrument, it is the size of a big grape but there aren’t any holes big enough for it to have fallen inside.

在一个乐器里面发现的,它有一个大葡萄那么大,但没有任何足够大的孔洞让它掉到里面。

老鼠

A: They have these in violins. They call them the mouse. It’s just years and years of fluff and detritus. If they get repaired the repairer will put ‘the mouse’ back into the violin for good luck. It could be something like that.

小提琴里也有。他们称之为「老鼠」。这只是年复一年的绒毛和碎屑。如果它们被修理好了,修理者会把「老鼠」放回小提琴里,以获得好运气。这可能是类似的东西。

https://www.reddit.com/r/whatisthisthing/comments/ojcnx3/found_inside_a_musical_instrument_it_is_the_size/

紫烟

Q: I know this isnt exactly an object but was hoping you guys could still help me out. What is this purple smoke?

我知道这称不上是一个物体,但希望你们仍然可以帮助我。这个紫烟是什么?

紫烟

A: If it’s a trash-to-ethanol refinery/plant there’s a good chance they got a load of iodine-rich hospital waste.

如果这是一家将垃圾转化为乙醇的炼油厂,他们很有可能得到了大量富含碘的医院废物。

https://www.reddit.com/r/whatisthisthing/comments/o9kq6p/i_know_this_isnt_exactly_an_object_but_was_hoping/

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emoji 背后的故事

偶然间看到的一篇文章,讲了三只🐒的故事,突发奇想想要写这么篇文章。

🙈🙉🙊

这三只🐵,应该是常用的 emoji 表情,可是你知道他们背后的意思么?

首先这三个 emoji 表情分别叫做🙈(非礼勿视),🙉(非礼勿听),🙊(非礼勿言)。它们被叫做「三猿」,又叫做「三不猴」,是指三个分别用双手遮住眼睛、耳朵与嘴巴的猴子雕像,而在世界其他地方则被称为 Three wise monkeys,显示了名为「不见、不闻、不言」(日语:見ざる、聞かざる、言わざる)之睿智的三个秘密。

各个国家都有关于三猿的来源:

🇨🇳,出自《论语》:「非礼勿视、非礼勿听、非礼勿言、非礼勿动」;

🇰🇵,朝鲜半岛上对婚前女性告诫说:「见到了也当作没看到,听到了也要当作没听到,想要说也不能说。」;

🇮🇳:印度的圣雄甘地经常以三猿之像来传达「不见恶事,不听恶词,不说恶言」的教导;

🇺🇸:美国的教会学校等处也用三猿来教导学生不要看猥亵的事物,不要听与性相关的谣传,不要说虚假与下流的言词;

🇯🇵:日文「见ざる、闻かざる、言わざる」为日本8世纪的腔调,是用来翻译天台宗的“不见、不闻、不言”的传说。

下面是一些关于三猿的雕刻作品:

三猿

三猿

另外,游戏《只狼》中,在金刚山仙峰寺幻境中的见闻言三猿,也就是这三只猴子。一般的 Boss 需要用刀剑正面对决,而这一关的目的是为了抓到这三个猿猴。见猿的眼神很敏锐,远远看到到主角的存在就会迅速逃跑;闻猿的耳朵很灵敏,远远听到主角的脚步声就会迅速逃跑;言猿的脖子上挂着一个铜锣,发现玩家后会敲锣发出声响让周围的猴子都逃掉。

🔰

这是个用得比较少的 emoji,🇨🇳基本上见不到,我唯一见到的一次是微商拿它做文字的点缀符号。

这其实是🇯🇵的新手上路标志。就和🇨🇳的黄色实习标志一样,在🇯🇵叫做初心運転者標識(しょしんうんてんしゃひょうしき)

根据🇯🇵《道路交通法》第71条之五的第一项规定,驾驶人在初取得“第一类普通汽车”(普通自動車一種)的驾驶执照之后,必需在车辆前后高度40至120公分的范围内,贴上此标志,至少一年。未贴此标志者若遭查获,会遭违规记点的处分。此规定的目的在于保护道路驾驶经验尚不足的新手驾驶及其周围的车辆,降低交通事故。但并未明文规定一年后是否仍可贴此标志。

🔰

🔰

🕴

「浮在地面上的西装男」,一个西装革履,戴着帽子和墨镜,但是却浮在半空,在地面投射阴影,看似飘浮在空中的男士。他是谁?鬼怪?外星人?神秘来客?这其实是参考 The Specials 乐队 2014 年的歌曲 Ghost Town 封面上的人形惊叹号,一般用于表示人形幽灵或有特异功能的人。

🕴

🕴

👨‍🎤

男歌手,在设计的 emoji 中,👨‍🎤的原型是「史上最伟大摇滚艺人」——英国 歌手大卫·鲍伊(David Bowie)。

这富有个性的面部彩绘造型来源于他的第六张专辑 《Aladdin Sane》。

👨‍🎤

👨‍🎤

🌊

浪,这也是一个比较常见 emoji。它的来源就是日本浮世绘画家葛饰北斋的著名木刻版画——《神奈川冲浪里》。

🌊

☑️ ☆

What is this thing 12

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

Q: Found this glass like tube “shell” washed up on a beach in North Caroline, any idea what it is?

这个像玻璃管一样的「贝壳」被冲上了卡洛琳北部的海滩,你知道这是什么吗?

贝壳

贝壳

贝壳

A: Stingray teeth

赤魟的牙齿。

贝壳

https://www.reddit.com/r/whatisthisthing/comments/nrmrx2/found_this_glass_like_tube_shell_washed_up_on_a/

浮木

Q: Driftwood with metal plaque found on the Mississippi river bank.

在密西西比河岸发现的带金属牌的浮木。

浮木

A: Looks like a piece from a bedhead. I think the sheath of wheat is a xtian symbol about reaping what you sow and of death and renewal. Something along those lines. Wheat has been used on double (marital) beds for centuries, including the bedhead and upright posts. They’re also used on chairs in a literal or a stylised way and represent prosperity in relation to the ‘reap what you sow’ type of symbolism.

看起来像是床头的一部分。我认为麦子的鞘是一个关于一分耕耘一分收获,死亡和重生的基督教象征。差不多就是这些意思。几个世纪以来,小麦一直被用在双人床上,包括床头和立柱。它们也以字面或风格化的方式用在椅子上,并代表与「一分耕耘一分收获」类型的象征意义有关的繁荣。

https://www.reddit.com/r/whatisthisthing/comments/nyo0ok/driftwood_with_metal_plaque_found_on_the/

浴缸

Q: Full tub with deep front half. USA. Listing calls it a mailman tub. Google results in Rule 34.

一个前半部分很深的浴缸,位置是在美国。听说叫做邮递员浴缸,谷歌搜索结果会有色情内容。

浴缸

A: Probably for washing your feet.

可能就是用来洗脚的。

A: I was thinking feet as well. After all, mailmen have sore feet.

我也在想应该是用来洗脚的,毕竟邮递员的脚很疼。

https://www.reddit.com/r/whatisthisthing/comments/nuo74z/full_tub_with_deep_front_half_usa_listing_calls/

金属片

Q: Found these soft metal objects while metal detecting under a pier at low tide.

退潮时在码头下进行金属探测时发现了这些软金属片。

金属片

A: Saw a similar post a few weeks back and I don’t remember what religion but I’m pretty sure they’re good luck/prayer charms that are tossed in the water on purpose. They’re cheaply buyable and have no significance once they hit the water so you can keep them without upsetting anyone, but no, they aren’t ancient.

几周前看到一个类似的帖子,我不记得是什么宗教,但我很确定它们是故意扔到水里的好运或者祈祷符。它们很廉价,随随便便就能买到,而且一旦扔到水就没有任何意义,所以你可以留着它们而不用担心得罪其他人,但不,它们并不古老。

https://www.reddit.com/r/whatisthisthing/comments/nmlb5v/found_these_soft_metal_objects_while_metal/

STOP

Q: Variable stop sign in Illinois

伊利诺伊州的可变停车标志。

STOP

There wouldn’t be another road coming in at a shallow angle to the left of this, would there?
These are blinders, typically used so the sign can old be read from a narrow angle. They’re also called directional shields. You’ll see them on traffic lights a lot more often.
https://www.tapconet.com/product/blinder-for-stop-sign

这条路的左边是不是还有另一条以很小的角度并入的路?

这些是遮罩,通常用于标识可以从一个狭窄的角度阅读。它们也被称为方向屏蔽。你会经常在交通灯上看到它们。

https://www.tapconet.com/product/blinder-for-stop-sign

https://www.reddit.com/r/whatisthisthing/comments/nw0ysg/variable_stop_sign_in_illinois/

小东西

Q: A small plastic and metal device, found in the card slot of an ATM

一种小型的塑料和金属装置,在自动取款机的卡槽中发现。

小东西

A: Looks like a Lebanese loop to me used in atm fraud, I won’t explain how just tell bank.

在我看来,这是一个用于 ATM 诈骗的黎巴嫩圈。 我不会说明这怎么用,你只需要告诉银行这件事就行了。

https://www.reddit.com/r/whatisthisthing/comments/ntktis/a_small_plastic_and_metal_device_found_in_the/

石头

Q: 6” Tall, 4” Wide, Feels Metal-ish, Found in the Colorado foothills.

6 英寸高,4 英寸宽,感觉像金属,发现于科罗拉多山麓。

石头

Looks like an iron nodule. Natural concentration of iron.
See here https://sites.wustl.edu/meteoritesite/items/concretions/#:~:text=Hematite%20nodules%20are%20often%20formed,a%20wide%20variety%20of%20shapes.
P.S. I have a degree in geology
P.S. again. Went to sleep when this had like 7 likes. Thanks for the awards and I totally love this flocculation of geologists.
P.P.S. First Reddit gold!!! Thanks kind stranger!!

看起来像铁结核。天然聚合的铁。

可以看这里:https://sites.wustl.edu/meteoritesite/items/concretions/#:~:text=Hematite%20nodules%20are%20often%20formed,a%20wide%20variety%20of%20shapes

P.S. 我有地质学学位。

再一次 P.S. 当我睡觉的时候有 7 个赞,谢谢你们的支持,我很高兴出来那么多地质学家作答。

P.P.S. 第一次收到 Reddit gold!!!谢谢陌生人!

https://www.reddit.com/r/whatisthisthing/comments/nnesqq/6_tall_4_wide_feels_metalish_found_in_the/

☑️ ☆

A puzzle a day

煎蛋上看到了这个 puzzle,立马上淘宝买了一份。有点难度,希望可以坚持打卡一年!

正文内容通过以下代码生成:

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September

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☑️ ☆

nvm use 命令不生效问题以及解决方法

问题

今天启动项目的时候发现报错了,提示说 node-sass 的版本不适用当前版本的 nodenode-sass 官网有一张表格,记录着 node-sassnode 的对应版本:

NodeJSSupported node-sass versionNode Module
Node 166.0+93
Node 155.0+88
Node 144.14+83
Node 134.13+, <5.079
Node 124.12+72
Node 114.10+, <5.067
Node 104.9+, <6.064
Node 84.5.3+, <5.057
Node <8<5.0<57

我使用的 node-sass 版本为:

1
"node-sass": "^4.12.0"

我记得我的 node 版本应该是 v14.16.0,应该不会有问题啊。

解决?

但是试了几次 npm run serve,都是报错,于是我只好查看了一下我的 node 版本:

1
2
> node --version
v16.3.0

v16.3.0???

我明明是 v14.16.0 啊,怎么变成 v16.3.0 了?我想起前几天好像是用 nvm 安装了一个当前最新的版本,可能那时候安装好没切换回来吧,于是我:

1
2
> nvm use v14.16.0
Now using node v14.16.0 (npm v7.15.1)

大问题

ok!easy,于是我愉快的 npm run serve,靠!怎么还是报错?

我再次查看了一下我的 node 版本:

1
2
> node --version
v16.3.0

怎么没切过去?出了什么问题?

上网查了好多资料,大多数都让我卸载 nvmnode 重新安装的。但是我不想把我的环境搞得一团糟,所以我一直在搜索有没有其他的的解决方案。

终于我看到一个方案是:看看有没有安装除了 nvm 安装的其他 node

于是:

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which -a node

果然,除了 nvm 下的 node,还有 homebrew 也有个 node。之后我又确认了一下:

1
brew list

确实,列表中有 node。之后我看了我的 history,因为我记得我没有用 homebrew 安装过 node,翻了一遍,确实没有,虽然很好奇,但是我还是准备动手删了它!

1
brew uninstall node

但是却提示:

Error: Refusing to uninstall /opt/homebrew/Cellar/node/16.3.0
because it is required by yarn, which is currently installed.

yarn?原来是你!我终于想到昨天下午为了搭建一个新项目的环境,我安装了 yarn,由于它是依赖于 node 的,所以 homebrew 顺便帮我安装了 node。知道了原因,接下来就好办了。

解决

首先卸载 yarn

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brew uninstall yarn

然后卸载 node

1
brew uninstall node

之后再重新安装 yarn 并加上忽略依赖项参数:

1
brew install yarn --ignore-dependencies

至此,nvmyarn 终于能和谐共处啦🎉!

参考

☑️ ☆

What is this thing 11

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

白色的大脑

Q: Found this on the side of the road in my neighborhood. Thought it was a brain, then dissected it and now I have no idea. Lots of small lobes, fuzzy inside, rubbery? My shoe for size reference.

在我家附近的路边发现了这个。我以为它是一个大脑,然后解剖了它,现在我不知道了。有很多小叶子,里面是模糊的,是橡胶的?我的鞋子是用来参考尺寸的。

白色的大脑

白色的大脑

白色的大脑

白色的大脑

白色的大脑

白色的大脑

白色的大脑

白色的大脑

A: Is that a shit?!

那是坨屎吗?

Q: Solved. I’m an idiot who dissected dog poop

(题主):解决了。我是一个解剖狗屎的白痴。

https://www.reddit.com/r/whatisthisthing/comments/nb4z70/found_this_on_the_side_of_the_road_in_my/

好多锁

Q: This is a on gate blocking road access to some cell towers. Why so many locks, and how would someone even open it?

这是一扇大门,挡住了通往一些手机塔的道路。为什么有这么多的锁,他们该怎么打开它?

锁

Q: You can open the gate by unlocking only one padlock. The way it’s designed means that multiple people can use the gate, and if one person loses their keys, only their padlock needs replaced. As opposed to one padlock with many keys, you’d need to give tons of people the new key.

你只需解开一个挂锁就可以打开大门。它的设计方式意味着多人可以使用这扇门,如果一个人丢了钥匙,只有他的挂锁需要更换。相对于一个挂锁有很多钥匙,你需要给所有人新的钥匙。

https://www.reddit.com/r/whatisthisthing/comments/n0s3ym/this_is_a_on_gate_blocking_road_access_to_some/

马其顿的亚历山大三世

Q: Im waiting for the bank to open and they have this card facing the street. What is it used for?

我在等待银行开门,他们把这张卡面向街道。它是用来做什么的?

银行扑克

A: Former bank employee here. It’s definitely a safety signal. We switched ours quarterly and it is to let other employees know that it is all clear to open. Typically we had 2 employees “open” the branch while the rest waited in the parking lot or across the street for “all clear.” The openers go in, turn off alarm, search the building and check everything then set the signal.

我是前银行雇员。这绝对是一个安全信号。我们每季度更换一次信号,是为了让其他员工知道可以开门了。通常情况下,我们有两名员工”打开“分行,而其他员工在停车场或街对面等待“一切正常”。开门人进去,关闭警报,搜索大楼并检查一切,然后设置信号。

https://www.reddit.com/r/whatisthisthing/comments/nbk05j/im_waiting_for_the_bank_to_open_and_they_have/

水龙头

Q: Found this in my bathroom in Germany…

在我德国的浴室里发现了这个……

水龙头

A: It looks like they are meters that show how much hot and cold water has been used. I don’t know why your meter it that way.

看起来它们是显示已使用多少热水和冷水的仪表,我不知道为什么你的水表是这样的。

https://www.reddit.com/r/whatisthisthing/comments/my6wyq/found_this_in_my_bathroom_in_germany/

小水槽

Q: WITT? An unusually shaped sink possibly in a corridoor, spotted in a property listing on an older house. Looks quite narrow, probably too small for washing boots.

这是个嘛?在一栋老房子的房产清单中,发现了一个可能位于走廊的形状异常的水槽。看起来很窄,对于洗靴子来说可能太小了。

水槽

A: It’s called a butlers sink, or cleaners sink. It’s used for cleaning, filling buckets, emptying out waste so housekeeping can wash down surfaces without wandering through the house.

它被称为管家水槽,或清洁工水槽。它用于清洁,装水桶,倒掉废物,这样家政人员就可以清理外部,而不用在房子里乱转。

https://www.reddit.com/r/whatisthisthing/comments/mzlaua/witt_an_unusually_shaped_sink_possibly_in_a/

针头

Q: Found on my driveway. The RCMP arrested my neighbour last night; could it be related to that?

在我的车道上发现的。加拿大皇家骑警昨晚逮捕了我的邻居,这可能与此有关吗?

针头

A: Yup, a taser dart

是的,一个泰瑟枪的飞镖。

泰瑟枪飞镖

(译者注:说起泰瑟枪突然想到之前有看过 The Slow Mo Guys 的一期被泰瑟枪击中的慢镜头视频,还蛮有意思的。)

https://www.reddit.com/r/whatisthisthing/comments/n166j5/found_on_my_driveway_the_rcmp_arrested_my/

勺子

Q: Small scoop with alligator clip as the handle. Found it cleaning out the kitchen.

用鳄鱼夹作为手柄的小勺子。在清理厨房的时候发现了它。

勺子

A: Coffee scoop with bag clip for coffee bag…

带有咖啡袋夹的咖啡勺…

https://www.reddit.com/r/whatisthisthing/comments/n53yxi/small_scoop_with_alligator_clip_as_the_handle/

☑️ ☆

What is this thing 10

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

奇怪的戒指

Q: What is this ring my Uber driver would randomly click?

我的优步司机会随机按的戒指是个什么东西?

ring

A: Hes praying, thats a counter

他在祷告,那是个计数器。

(译者注:应该是叫电子念珠吧,我爸有一个。)

https://www.reddit.com/r/whatisthisthing/comments/mmnsxw/what_is_this_ring_my_uber_driver_would_randomly/

信号枪

Q: strange weapon i found in a german news clip about the turkish coup.

我在一则关于土耳其政变的德国新闻里发现了奇怪的武器。

信号枪

A: Drone killer. It sends a strong and very directional radio frequency signal to jam the receíver on the drone to cause it to crash.

无人机的杀手。它会发送一个很强的定向无线电频率信号干扰无人机上的接收器使其坠毁。

https://www.reddit.com/r/whatisthisthing/comments/mm11we/strange_weapon_i_found_in_a_german_news_clip/

金属盒子

Q: Found in a garden. Metallic object that closes in on itself

在花园里发现的可以合上的金属物件。

盒子

盒子

A: Looks like a Hindu ritual box. It is missing the middle piece that would sit in that central hole.
See some for sale here:
https://www.exoticindiaart.com/sculptures/Ritual/box/

看起来像印度教的礼盒。它缺少了位于中间洞的部分。

这里有卖:

https://www.exoticindiaart.com/sculptures/Ritual/box/

盒子

盒子

https://www.reddit.com/r/whatisthisthing/comments/mjvmfa/found_in_a_garden_metallic_object_that_closes_in/

痕迹

Q: What’s the long-lasting trail behind this boat?

这艘船后面长长的痕迹是什么?

痕迹

A: The disturbed water hasn’t mixed back into surrounding water very quick and the sun is reflecting off the different surface waves amplifying the difference.

被搅乱的水并没有很快地混入周围的水中,太阳从不同的表面波反射回来,放大了这种差异。

https://www.reddit.com/r/whatisthisthing/comments/mfwpcd/whats_the_longlasting_trail_behind_this_boat/

绿光

Q: staying at an air b&b, why does the vent have a green light inside it?

住在爱彼迎的旅馆里,为什么通风口会发出绿色的光?

绿光

A: It’s likely could be a UV-C sterilization lamp. Kills germs/viruses as they pass by. Also can help prevent mold and whatnot building up on the coil.

可能是紫外线消毒灯。杀死照射到的细菌或病毒。也可以防止霉菌和其他的些什么不在管道中生成。

https://www.reddit.com/r/whatisthisthing/comments/mdnovh/staying_at_an_air_bb_why_does_the_vent_have_a/

模具

Q: Found metal detecting in a Minnesota park where other objects around 1860s have been pulled.

在明尼苏达公园发现的金属物件,一同被发现的还有一些十九世纪六十年代的物体。

模具

A: Mold for casting lead soldiers?

铸造铅士兵的模具?

A: Exactly. It’s half the mold. I had the same set as a kid.

楼上说的完全正确,这只是模具的一半,我小时候有一套和这一样的。

A: Man how times have changed. You were playing with molten lead now kids are Tik toking or whatever it is

大人,时代变了,你小时候在玩铅铸模型,现在的小孩都在玩抖音什么的。

https://www.reddit.com/r/whatisthisthing/comments/mv5m0i/found_metal_detecting_in_a_minnesota_park_where/

披萨机

Q: What is this spur on the back of my pizza slicer?

我披萨切片机后面的刺是什么?

披萨切片机

A: Ravioli maybe? Like pizza cutters are also used to cut pasta.

也许是用来切意大利饺的? 像这样的披萨切片机也会用来切意大利面。

(译者注:意大利饺长这样。)

意大利饺

https://www.reddit.com/r/whatisthisthing/comments/mjcyrb/what_is_this_spur_on_the_back_of_my_pizza_slicer/

一大堆试管

Q: Old school chem set maybe? Found in Abandoned building with no info on it.

也许是旧学校的化学教具?在废弃的建筑里发现的,没有任何信息。

试管

A: Googling some of the names seems to point to a collection of homeopathic garbage.

谷歌了一些名字之后似乎指向了一堆号称顺势疗法的垃圾。

(译者注:这一块专业知识不太懂,如果有大佬麻烦科普一下!)

(译者再注:多谢 淡乱君ooooo大海里的一粒阿莫西林 科普!)

https://www.reddit.com/r/whatisthisthing/comments/mn9aqi/old_school_chem_set_maybe_found_in_abandoned/

奇怪的容器

Q: What would be shipped in this strange shaped container?

这个奇怪的容器里面装的是什么?

奇怪的容器

A: Had a hunch, and it’s a ( human or equine) sperm shipping container. We’ve had one of these on here before, which are used to ship bull sperm.

我有预感,它是一个(人类或马)精子运输容器。我们之前在这上面有一个,用来运送公牛精子的。

https://www.reddit.com/r/whatisthisthing/comments/mt7gx3/what_would_be_shipped_in_this_strange_shaped/

☑️ ☆

What is this thing 15

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

窗上的怪圈

Q: These strange dust patterns keep showing up on screens of my apartment windows.

这些奇怪的灰尘图案不断出现在我公寓窗户的窗纱上。

怪圈

A: Previous tenant smoked w a fan in the window. I’ve seen this so many times turning over apartments for work.
That mark is going to keep coming back until you wash the entire window screen.
I suggest removing the screen and washing it in the tub with a good dish soap.

前任房客在窗户上用风扇吸烟。我为工作而经常换公寓,见过很多次这样的情况。

在你清洗整个窗纱之前,这个印记会不断出现。

我建议把窗纱拆下来,在浴缸里用好的洗洁精清洗。

https://www.reddit.com/r/whatisthisthing/comments/pnk4xn/these_strange_dust_patterns_keep_showing_up_on/

OK 绷

Q: This was in my bandaid wrapper instead of a bandaid. Almost rubbery. Solid construction, not sticky, same on opposite side.

这是在我的创可贴包装中发现的,而不是创可贴。几乎像橡胶一样。结构牢固,没有粘性,反面也一样。

OK绷

A: Looks like a manufacturing error where that may be the start, or end, of a production run. Either that or a golden ticket to see Billy Blanca at the band aid factory.

看起来是一个制造错误,这可能是生产的开始,或结束。要么就是一张去创可贴工厂见比利·布兰卡的金票。

https://www.reddit.com/r/whatisthisthing/comments/pmum0w/this_was_in_my_bandaid_wrapper_instead_of_a/

金属圆柱体

Q: I saw this in a theater, what it this piece of metal ? (8 years questioning myself. Please help)

我在剧院里看到这个,这块金属是什么?(一个困扰我 8 年的问题,请帮帮我)

圆柱体金属

A: Solved ! It seems it’s a light but school didn’t pay for this option.

解决了! 这似乎是一盏灯,但这是选配的,学校没有买。

https://www.reddit.com/r/whatisthisthing/comments/pkadad/i_saw_this_in_a_theater_what_it_this_piece_of/

小便池

Q: What is this toilet’s purpose? No additional details available.

这个厕所的用途是什么?没有其他细节。

小便池

A urinal for women: https://deabath.com/product/1950s-vintage-standard-female-urinal-prop-rental/

Here we have a 1950’s Standard “Sanistand” Female urinal. Strangely enough, these weren’t terribly popular, but Standard did make them between the mid-1950’s up through the early 1960’s.

女用小便池:https://deabath.com/product/1950s-vintage-standard-female-urinal-prop-rental/

我们这里有一个1950年代的标准「Sanistand」女式小便池。奇怪的是,这些小便池并不十分流行,但标准公司在 20 世纪 50 年代中期至 60 年代初期间确实生产了这些小便池。

小便池

小便池

小便池

紧急

Q: Large, white container found on flatbed on the highway in Midwest US. Says “Urgent” on the label.

在美国中西部高速公路的平板车上发现的大型白色集装箱,标签上写着「紧急」。

集装箱

A: It’s a shipping container for a General Electric CF34 Turbofan Engine, commonly fitted to Embraer and Bombardier Jets.
It’ll be urgent because there will be an Aircraft sat on the ground waiting for it (AOG).

这是一个装着通用电气CF34涡轮风扇发动机的运输集装箱,通常安装在巴西航空工业公司和庞巴迪飞机上。

它很紧急,因为会有一架飞机在地面上等着它(AOG)。

(译者注:AOG 应该是 Aircraft on ground,表示问题严重到足以阻止飞机飞行。)

https://www.reddit.com/r/whatisthisthing/comments/piy9gc/large_white_container_found_on_flatbed_on_the/

混凝土箱

Q: Large concrete containers with slab lid. Completely enclosed. Being buried together. Hundreds.

大型混凝土容器,带板状盖子。完全封闭的。被埋在一起。数以百计。

混凝土箱

混凝土箱

混凝土箱

A: Spread out along a roadway makes me think they’re used for storm water retention and they will be drilled for pipe connections once they are buried

沿着道路铺开,让我觉得它们是用来保留雨水的,一旦被掩埋,它们将被钻进管道连接。

https://www.reddit.com/r/whatisthisthing/comments/pf8foh/large_concrete_containers_with_slab_lid/

白色团块

Q: White blob in a bottled vitamin water

瓶装维生素水中的白色团块。

白色团块

A: Looks like a fungal colony to me. Source: microbiologist.

对我来说看起来像一个真菌菌落。 来源:微生物学家。

https://www.reddit.com/r/whatisthisthing/comments/pif0ye/white_blob_in_a_bottled_vitamin_water/

☑️ ☆

What is this thing 13

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

大铁球

Q: Found this digging around the mouth of a major Caribbean harbor (on my property). Did this come out of a cannon?

在加勒比海的一个主要港口(在我的地皮上)附近挖掘出了这个东西。这是从大炮里射出来的吗?

大铁球

大铁球

A: 100% a cannonball.

100% 是个炮弹。

https://www.reddit.com/r/whatisthisthing/comments/oa55gi/found_this_digging_around_the_mouth_of_a_major/

泡沫

Q: What is this bubbling out of the ground in my yard? Purplish metallic gooey inside. Keeps bubbling even if I dig a thin layer down with a shovel.

我院子里的地面上冒出的是什么东西?里面有紫红色的金属粘稠物。即使我用铲子挖下薄薄的一层,也会一直冒泡。

泡沫

泡沫

泡沫

A: Looks kind of like expanding foam insulation? There is a purple kind that is the same shade. Is it dripping from a roof above?

看起来有点像膨胀泡沫绝缘材料?有一种紫色的,也是同样的颜色。它是从上面的屋顶滴下来的吗?

OP: No structure within 20 feet. It is quite literally bubbling up from the ground

原题主:20 英尺内没有建筑。它确实是从地面上冒出来的。

A: Do you see any large trucks in the vicinity that could be pumping something? It sure looks like injected foam in the way it gets a toughened skin around a soft interior.
Like this, but on a grander scale.

你是否看到附近有任何大型卡车,可能在抽水?从它在柔软的内部周围形成坚硬的表皮的方式来看,它看起来确实像注入的泡沫。

像这样,但规模更大。

泡沫

OP: The construction here is mainly finished except for a retention pond down the street. Haven’t noticed any houses nearby getting work done on the ground or having something pumped.

原题主:除了街边的一个蓄水池,这里的建筑主要已经完工。我没有注意到附近有任何房子在地面上施工,或者有什么东西被抽走了。

A: Well, due to the purple color and behavior of it bubbling up from the ground my next guess is that a contractor disposed of a large cannister of spray foam insulation into the fill that made up your lawn. The recent rains caused settling which caused the cannister to get punctured.
This is certainly possible. I have found all kinds of shit in construction fill in housing developments. Disposed of concrete forms, lumber scraps, paint cans, spray cans, beer bottles/cans etc…
Edit: OP you must dig to China to reveal the source of the mystery!

嗯,由于它的紫色和从地面冒出的行为,我的进一步猜测是,一个承包商将一大罐喷涂泡沫绝缘材料扔进了构成你的草坪的填料中。最近的降雨造成了沉降,导致罐子被刺破。

这当然是可能的。我曾在住宅区的建筑填料中发现各种垃圾。处理过的混凝土模板、木材废料、油漆罐、喷雾罐、啤酒瓶/罐等等。

编辑:题主你必须挖到中国去,才能揭开神秘的源头!

https://www.reddit.com/r/whatisthisthing/comments/ojuu87/what_is_this_bubbling_out_of_the_ground_in_my/

饼干

Q: What are these strands/threads coming out of my crackers?

从我的饼干里出来的这些丝线/线是什么?

饼干

饼干

A: I work in food manufacturing. This is 100% frayed edges of the conveyors that take the crackers through the sheeting process before being transferred to the oven band.
Contact the manufacturer with the codes and date on the box. It will help them in their investigation, and you will most likely get some free stuff.

我从事于食品制造业工作。这 100% 是传送带的边缘磨损产物,这些传送带将饼干在传送到烤炉带之前通过片状加工。

请与制造商联系,提供盒子上的代码和日期。这将有助于他们的调查,而且你很可能会得到一些免费的奖励。

https://www.reddit.com/r/whatisthisthing/comments/oghic0/what_are_these_strandsthreads_coming_out_of_my/

ATM

Q: What are these 2 metal studs on the side of this atm?

这个 ATM 机侧面的两个金属螺柱是什么?

ATM

A: Pretty sure they put those on there to stop this from happening.

很明显,他们把这些放在那里是为了阻止这种情况发生

ATM

ATM

ATM

https://www.reddit.com/r/whatisthisthing/comments/odk775/what_are_these_2_metal_studs_on_the_side_of_this/

金属架子

Q: Found in our new house on the top landing bannister rail. Seems like it’s meant to hold something but not sure what it is?

在我们的新房子里顶楼的栏杆上发现的。看起来它是用来装东西的,但不知道是什么东西?

架子

A: Appears to be a 3M Command hair dryer holder. Though given the location, perhaps previous owners were using it for something else (what I have no idea)

看起来是一个 3M 公司的吹风机支架。但是考虑到在这个位置,也许以前的主人用它来做别的事情(我不知道是什么)。

架子

https://www.reddit.com/r/whatisthisthing/comments/ofigao/found_in_our_new_house_on_the_top_landing/

绒毛

Q: Found inside a musical instrument, it is the size of a big grape but there aren’t any holes big enough for it to have fallen inside.

在一个乐器里面发现的,它有一个大葡萄那么大,但没有任何足够大的孔洞让它掉到里面。

老鼠

A: They have these in violins. They call them the mouse. It’s just years and years of fluff and detritus. If they get repaired the repairer will put ‘the mouse’ back into the violin for good luck. It could be something like that.

小提琴里也有。他们称之为「老鼠」。这只是年复一年的绒毛和碎屑。如果它们被修理好了,修理者会把「老鼠」放回小提琴里,以获得好运气。这可能是类似的东西。

https://www.reddit.com/r/whatisthisthing/comments/ojcnx3/found_inside_a_musical_instrument_it_is_the_size/

紫烟

Q: I know this isnt exactly an object but was hoping you guys could still help me out. What is this purple smoke?

我知道这称不上是一个物体,但希望你们仍然可以帮助我。这个紫烟是什么?

紫烟

A: If it’s a trash-to-ethanol refinery/plant there’s a good chance they got a load of iodine-rich hospital waste.

如果这是一家将垃圾转化为乙醇的炼油厂,他们很有可能得到了大量富含碘的医院废物。

https://www.reddit.com/r/whatisthisthing/comments/o9kq6p/i_know_this_isnt_exactly_an_object_but_was_hoping/

☑️ ☆

微波炉简易使用指南

「不要盯着微波炉看,会有辐射。」小时候,总是会听到大人对我这么说。说实话这句话影响了我蛮久一段时间,我甚至会在启动微波炉后跑到另一家房间来避免「辐射」。

前段时间,我开始自己带饭到公司做为午餐,我妈每天给我准备了不同的菜。在用微波炉加热饭菜的时候我就遇到了很多问题,例如有时候加热出来的饭菜会一部分热,一部分不热;例如加热时我应不应该加盖;什么样的器皿可以放入微波炉加热?

为了知道这些问题的答案,我想先弄懂微波炉的原理是什么?我觉得只要知道事物的基本原理,那么上面这些问题也就迎刃而解了。

微波炉的原理

食物中存在的电极性分子会在微波的震荡下旋转,从而产生热量。

什么是电极性分子呢?简单来说如果分子中的电荷分布不均匀,那么它就是电极性分子。

水(H2O)——就是一种电极性分子。

什么又是微波呢?微波和红外线、可见光、X 射线一样,都是一种电磁波。它的频率范围大概在 300MHz 至 300GHz 之间,对应的波长则为 1m 至 1mm之间。微波有三种特性:穿透吸收反射。对于玻璃、塑料和瓷器,微波几乎是穿越而不被吸收。对于水和食物等就会吸收微波而使自身发热。而对金属类东西,则会反射微波。

结合微波的这三种特性,我们就能初步理解微波的设计以及使用方法。

微波炉的设计与使用

首先用于加热的器皿可以使用玻璃、塑料和瓷器这些不会吸收的材质,这样在加热完成后器皿的温度只有加热后的食物于其接触传递来的热量。但如果加热的食物带汤,那么器皿的温度还是会很高的,还是得戴手套去取。

其次是被加热的食物含水量越多,那么加热的效率就会越高,这样将就可以大致的估计需要加热的时间了。需要注意的是,如果加热的是高脂肪低水份的食物,那么其加热速度会比高水分的食物更加快,需要减少其加热的时间。

最后是微波炉的金属壳可以很好的隔绝微波,并使其在腔内不停得反射增大微波使用效率。

微波炉的一些特点

相比与一般从外向里的加热方式,微波这是内外同时加热,所以不太会出现外边熟了里面还没熟的情况。

由于微波会在腔内通过金属壁进行反射,通常这种情况下就会出现驻波,这就导致了被加热的食物在波传播的方向上,会出现一段热一段不太热的情况,而且这个两处的距离和微波的波长有关,简单来说,相邻两处较热区域之间的距离约等于微波的波长的一半,知道了波长,我们就可以算出微波炉微波的频率了。

也因为上面这种情况,微波炉大多带一个玻璃转盘,通过旋转食物,来规避上面这种间断加热的问题。

微波炉的一些 Tips

  • 加热带壳和带皮的食物时,需要将其戳破或去皮,否则会因内部水分蒸发导致内部压力增加而爆裂。

  • 加热液体时应避免单独入微波炉加热,要放置搅拌棒等以助热能释放。没有杂质的蒸馏水加热后尤其不应立即取出,因温度可能已经超过沸点但仍然不沸腾汽化,一旦受到扰动则会暴沸灼伤。一般家用自来水因为其中含有少许杂质,单独加热也会沸腾。

  • 带壳蛋不论生熟都不应微波加热。去壳生蛋须刺破蛋黄,否则高温加热时也会爆裂喷溅;去壳熟蛋因蛋白紧密包覆,蛋黄依然有可能爆裂,需切开加热。

参考链接

  1. https://zh.wikipedia.org/wiki/%E5%BE%AE%E6%B3%A2%E7%82%89

  2. https://en.wikipedia.org/wiki/Microwave_oven

  3. https://www.youtube.com/watch?v=kp33ZprO0Ck

☑️ ☆

What is this thing 10

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

奇怪的戒指

Q: What is this ring my Uber driver would randomly click?

我的优步司机会随机按的戒指是个什么东西?

ring

A: Hes praying, thats a counter

他在祷告,那是个计数器。

(译者注:应该是叫电子念珠吧,我爸有一个。)

https://www.reddit.com/r/whatisthisthing/comments/mmnsxw/what_is_this_ring_my_uber_driver_would_randomly/

信号枪

Q: strange weapon i found in a german news clip about the turkish coup.

我在一则关于土耳其政变的德国新闻里发现了奇怪的武器。

信号枪

A: Drone killer. It sends a strong and very directional radio frequency signal to jam the receíver on the drone to cause it to crash.

无人机的杀手。它会发送一个很强的定向无线电频率信号干扰无人机上的接收器使其坠毁。

https://www.reddit.com/r/whatisthisthing/comments/mm11we/strange_weapon_i_found_in_a_german_news_clip/

金属盒子

Q: Found in a garden. Metallic object that closes in on itself

在花园里发现的可以合上的金属物件。

盒子

盒子

A: Looks like a Hindu ritual box. It is missing the middle piece that would sit in that central hole.
See some for sale here:
https://www.exoticindiaart.com/sculptures/Ritual/box/

看起来像印度教的礼盒。它缺少了位于中间洞的部分。

这里有卖:

https://www.exoticindiaart.com/sculptures/Ritual/box/

盒子

盒子

https://www.reddit.com/r/whatisthisthing/comments/mjvmfa/found_in_a_garden_metallic_object_that_closes_in/

痕迹

Q: What’s the long-lasting trail behind this boat?

这艘船后面长长的痕迹是什么?

痕迹

A: The disturbed water hasn’t mixed back into surrounding water very quick and the sun is reflecting off the different surface waves amplifying the difference.

被搅乱的水并没有很快地混入周围的水中,太阳从不同的表面波反射回来,放大了这种差异。

https://www.reddit.com/r/whatisthisthing/comments/mfwpcd/whats_the_longlasting_trail_behind_this_boat/

绿光

Q: staying at an air b&b, why does the vent have a green light inside it?

住在爱彼迎的旅馆里,为什么通风口会发出绿色的光?

绿光

A: It’s likely could be a UV-C sterilization lamp. Kills germs/viruses as they pass by. Also can help prevent mold and whatnot building up on the coil.

可能是紫外线消毒灯。杀死照射到的细菌或病毒。也可以防止霉菌和其他的些什么不在管道中生成。

https://www.reddit.com/r/whatisthisthing/comments/mdnovh/staying_at_an_air_bb_why_does_the_vent_have_a/

模具

Q: Found metal detecting in a Minnesota park where other objects around 1860s have been pulled.

在明尼苏达公园发现的金属物件,一同被发现的还有一些十九世纪六十年代的物体。

模具

A: Mold for casting lead soldiers?

铸造铅士兵的模具?

A: Exactly. It’s half the mold. I had the same set as a kid.

楼上说的完全正确,这只是模具的一半,我小时候有一套和这一样的。

A: Man how times have changed. You were playing with molten lead now kids are Tik toking or whatever it is

大人,时代变了,你小时候在玩铅铸模型,现在的小孩都在玩抖音什么的。

https://www.reddit.com/r/whatisthisthing/comments/mv5m0i/found_metal_detecting_in_a_minnesota_park_where/

披萨机

Q: What is this spur on the back of my pizza slicer?

我披萨切片机后面的刺是什么?

披萨切片机

A: Ravioli maybe? Like pizza cutters are also used to cut pasta.

也许是用来切意大利饺的? 像这样的披萨切片机也会用来切意大利面。

(译者注:意大利饺长这样。)

意大利饺

https://www.reddit.com/r/whatisthisthing/comments/mjcyrb/what_is_this_spur_on_the_back_of_my_pizza_slicer/

一大堆试管

Q: Old school chem set maybe? Found in Abandoned building with no info on it.

也许是旧学校的化学教具?在废弃的建筑里发现的,没有任何信息。

试管

A: Googling some of the names seems to point to a collection of homeopathic garbage.

谷歌了一些名字之后似乎指向了一堆号称顺势疗法的垃圾。

(译者注:这一块专业知识不太懂,如果有大佬麻烦科普一下!)

(译者再注:多谢 淡乱君ooooo大海里的一粒阿莫西林 科普!)

https://www.reddit.com/r/whatisthisthing/comments/mn9aqi/old_school_chem_set_maybe_found_in_abandoned/

奇怪的容器

Q: What would be shipped in this strange shaped container?

这个奇怪的容器里面装的是什么?

奇怪的容器

A: Had a hunch, and it’s a ( human or equine) sperm shipping container. We’ve had one of these on here before, which are used to ship bull sperm.

我有预感,它是一个(人类或马)精子运输容器。我们之前在这上面有一个,用来运送公牛精子的。

https://www.reddit.com/r/whatisthisthing/comments/mt7gx3/what_would_be_shipped_in_this_strange_shaped/

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Premiere Pro 学习笔记

本文将采用问答的形式来记录学习 Premiere Pro 中遇到的问题。

目前正在学习过程中,等日后条目多了,将会进行分类。

导入的图片素材分辨率和项目分辨率不一致,该怎么修改图片大小?

  1. 将图片素材拖入视频轨道;

  2. 单击轨道中的相应素材;

  3. 在「源」窗口中单击「效果控件」标签页;

  4. 调整在「运动」效果下的「缩放」属性大小,即可同步调整素材大小了;

  5. 点击「缩放」标签即可在「节目」窗口显示图片大小变换框,可以直接用鼠标进行操作。

音频如何调整声音大小?

  1. 将声音素材拖入视频轨道;

  2. 单击轨道中的相应素材;

  3. 在「源」窗口中单击「效果控件」标签页;

  4. 调整在「音量」效果下的「级别」属性大小,即可调整素材的音量大小了。

如何将视频定格若干秒?

  1. 「仅拖动视频」到序列;

  2. 在序列中,右键单击视频线前面的「fx」,选择「时间重映射」->「速度」;

  3. 拖动时间线到需要定格的画面;

  4. 在「源」窗口中单击「效果控件」标签页;

  5. 左键单击「视频」->「时间重映射」->「速度」->「添加/移除关键帧」来添加关键帧;

  6. 按住「Ctrl」+「Alt」用鼠标左键长按关键帧右侧标记并拖动需要定格的时长;

  7. 「仅拖动音频」到序列(这样做是为了将图像和声音分离,不然的话定格之后音画将不同步);

  8. 使用「剃刀工具」在关键帧处将音频拆分为两段;

  9. 使用「选择工具」将后半段移动至定格结束后的位置。

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What is this thing 8

What is this thing 是 reddit 上的一个社区(community),上面时不时会有人发一些没见过的玩意来提问。

一起来看看吧!

灯泡

Q: Unknown glass object filled with unknown liquid, found in an early 1900’s barn. Any leads?

不知名的玻璃制物品里面充满了不知名的液体,在 1900 年代早期的谷仓中找到的。有什么线索么?

灯泡

A: Fire extinguisher.https://www.core77.com/posts/25006/light-by-fire-extinguisher-the-anti-incendiary-grenades-of-yore-25006

灭火器。

A: Very old fire extinguisher. Filling is quite toxic, be very careful not to break it.

非常古老的灭火器,里面的填充液有毒,小心不要打破它。

https://www.reddit.com/r/whatisthisthing/comments/l9hfgk/unknown_glass_object_filled_with_unknown_liquid/

三柱香

Q: What is this boat off the coast of Long Island, NY with three tall smoke stacks?

这艘在纽约长岛海岸外竖着三个烟囱的小船是什么?

小船

A: Not smoke stacks, piles. It’s a working barge, and those piles are lowered into the sea floor to stabilize the vessel while working. They are very commonly used on maritime construction projects such as bridge and tunnel building, surveying, shore protection, etc.

不是烟囱,是桩。 这是一艘正在工作的驳船,将这些桩放到海床中,以在工作时稳定船只。 它们常常用于海事建设项目,例如桥梁和隧道建设,测量,海岸保护等。

小船2

https://www.reddit.com/r/whatisthisthing/comments/lgtlza/what_is_this_boat_off_the_coast_of_long_island_ny/

塑料藕带

Q: WITT? They’ve been showing up on the beach by the hundreds for the last month!

这是个嘛?在上个月,它成百上千的出现在沙滩上。

塑料制品

A: Bio filter media

塑料生物滤料

https://www.reddit.com/r/whatisthisthing/comments/l8pkoa/witt_theyve_been_showing_up_on_the_beach_by_the/

小红瓶

Q: Small red container. The lid has a small spoon attached to the inside.

红色的小容器。这个盖子里面连着一个小勺子。

鼻烟壶

鼻烟壶

A: Snuff container

鼻烟壶

https://www.reddit.com/r/whatisthisthing/comments/lj3vqf/small_red_container_the_lid_has_a_small_spoon/

屋子

Q: These small “rooms” that are raised up from the ground are all over the Spanish countryside. Many of the old houses have one. What was/is it used for?

这些从地面升起的小「房间」遍布西班牙的乡村。许多老房子都有一个。它过去或者现在是用来干什么的?

小屋子

A: They’re grain stores called “hórreos”.

它们是叫做「hórreos」的粮仓。

https://www.reddit.com/r/whatisthisthing/comments/lg74at/these_small_rooms_that_are_raised_up_from_the/

UFO

Q: So, I found this thing on google maps, it’s a very strange feature that I can’t find anything but conflicting info about online. Google maps says it’s a train but how??? Why?!!! Does anyone have any solid facts about what this is?

我在谷歌地图上发现了这个东西,这是一个非常奇怪的特征,我在网上什么都找不到,除了矛盾的信息。谷歌地图显示这是一列火车,但怎么做到的?为什么?!!有人知道这是什么吗?

UFO

UFO

UFO

UFO

A: It is a block of ice thrown from the near by mountain in an avalanche. Here’s an article about it.

它是雪崩时从附近的山上抛下的一块冰。这里有一篇关于它的文章。

https://www.reddit.com/r/whatisthisthing/comments/lasoka/so_i_found_this_thing_on_google_maps_its_a_very/

异形舱

Q: What is this thing that looks like superman’s pod? i saw while going for a walk in burbank, ca

这个看起来像超人舱的东西是什么?我在加州伯班克散步时看到的。

异形舱

A: Probably viral marketing.

可能是一种病毒式营销。

A: An old prop from the show Colony?
https://colony.fandom.com/wiki/Outlier
This looks a lot like the pods that “outliers” (highly skilled humans) were scooped up by the aliens to go fight other aliens.

一个马戏团的旧道具吗?

https://colony.fandom.com/wiki/Outlier

这看起来很像异类(高等技术人类)被外星人带走去对抗其他外星人的豆荚。

异形舱

异形舱

异形舱

https://www.reddit.com/r/whatisthisthing/comments/led04h/what_is_this_thing_that_looks_like_supermans_pod/

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