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The formation mechanism of orange valvule-like pinhole in rolled aluminium foil was investigated by using optical microscopy,scanning electron microscopy,and energy dispersion X-ray spectrum.

利用光学显微镜、扫描电镜、能等试验手段对铝箔中"桔瓣"形形成的原因进行了

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Pinhole. A short unwelded area in the weld line extending through the entire pipe so that fluid will leak out through the area very slowly.

。指焊缝线上位焊接的、穿管子整个壁厚的细孔,可导致流体从该孔缓慢漏出。

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Telocentric lenses work with a wide depth of field. With a telocentric lens, you can image objects of different distances from the lens and the objects stay in focus.

具端着丝粒的镜头(注:我猜是类镜头吧)具有宽阔之景深,以具端着丝粒的镜头,你能够将由镜头不同距离之目标物成像和保持目标物在焦。

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美剧疑犯追踪POI第二季

The needle spiked in between the interviews.

约谈间隔时感应

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小故事大纪实

But would you ever imagine something that can fit in the eye of a needle?

但你曾想到过能放进雕塑吗?

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CNN 10 学生英语 2024年4月合集

If you don't have solar eclipse glasses, create a solar eclipse pinhole projector.

如果你没有日食眼镜,可以制作一个日食投影仪。

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小故事大纪实

I've made 14 camels in the eye of a needle, the queen's carriage.

我曾在里制作了 14 只骆驼和女王马车。

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双语版 TED-Ed 演讲精选

Each pinhole projects a separate, sharp image onto the geckos retina.

每个将一个清晰图像投射到壁虎视网膜上。

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少儿畅学课堂

Finally, you can make a pinhole projector to cast a single, clear projection of the sun.

另外 你可以做一个投影仪来显出、清晰太阳投影。

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Meanwhile, nocturnal geckos have pupils that shrink into slits studded with pinholes in higher light conditions.

与此同时,夜间活动壁虎在较高光照条件下瞳会收缩成布满狭缝。

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99%不为人知故事

But it was those needle marks that led to Robinson's arrest.

但正是这些导致罗宾逊被捕。

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小故事大纪实

(I) made Alice separately and I was lifting her, put her into the needle and my mobile phone went off.

我把爱丽丝分开做,打算将她放进里,就在这时,我手机响了。

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CNN 10 学生英语 2017年8月合集

Another way to safely view the eclipse is to use a pinhole viewer.

另一种安全观看日食方法是使用观察器。

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经济学人 Science and technology

Pinhole bored dwellings suggest that our sulfuria grows in them more abundantly than might be expected.

住宅表明我们硫磺在其中生长比预期要多。

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少儿畅学课堂

If you don't have these filters you can still observe the eclipse by making a pinhole camera using materials from around your home.

如果你没有滤光片,你可以选择使用摄像机,用一些家周围材料就可以制作。

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TED-Ed(视频版)

What she found was the god Cupid who sent gods and humans lusting after each other with the pinpricks of his arrows.

她发现是丘比特之神,他用箭让众神和人类互相勾引。

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精选英语短文

The American Astronomical Society also suggests watching the eclipse indirectly through a pinhole projector, or through binoculars or a telescope fitted with special solar filters.

美国天文学会还建议通过投影仪间接观看日食,或者使用配备了特殊太阳滤镜双筒望远镜或望远镜。

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SciShow 合集

And if you’re looking for a safe way to see the eclipse, we’ve got you covered with our special SciShow pinhole projector card!

如果您正在寻找一种安全方式来观看日食,我们可以为您提供特殊 SciShow 投影仪卡!

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CNN 10 学生英语 2024年4月合集

Now your pinhole projector is ready, so you can head outside, make sure the sun is behind you, hold the projector up to your eye, and then look for sunlight to come into the projector.

现在你投影仪已经准备好了,这样你就可以出去观测了,确保太阳在你背后,将投影仪放在眼睛前,然后等待阳光进入投影仪。

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双语版 TED-Ed 演讲精选

But in the great scheme of things, it's a pinprick, one of about 400 billion stars in the Milky Way galaxy, which you can see on a clear night as a pale white mist stretched across the sky.

但是在浩瀚宇宙中,它不过一个大小而已,是银河系中四千亿星星一员,正如你可以在晴朗晚上看到满天星星好似淡淡白雾。

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变得智慧

And you can imagine the water drop, if it's like a balloon and you're trying to push it into those little 10,000 little pinholes, it doesn't like to do that 'cause it's gotta conform to all those pinholes.

你可以想象那水滴, 如果它像一个气球, 而你试图把它挤进那万个微小里,它并不愿意那样做, 因为它必须适应所有这些。 它更愿意停留在一点空气口袋上。

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