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344-359) describes a micrometer in which a negative lens is introduced between the eye-piece and the objectglass.

象测微表与分开透镜。各种各样测微表被发明了除heliometer 以外为测量由象。Ramsdens 测微表包括一个分开透镜被安置在一台地球望远镜架设眼睛内在透镜共轭焦点。

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The coiled shapes of Trichinella isolated ML were observed under microscopes,then the lengths and widths of ML encystment(encysted index)were measured at random by micrometer.

镜下观察旋毛虫幼虫卷曲状态,用测微尺随机测量囊包长、宽。

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传说之境

These cracks are likely only micrometers long.

这些裂缝可能只有几微米

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VOA Special 2022年6月合集

A micrometer is one millionth of a meter.

1微米是百万分之米。

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VOA慢速英语_科技

Though the skin is made of many layers, its total thickness is less than a hundred micrometers.

虽然皮肤是由许多组成的,但它的不到100微米。

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VOA Special 2022年6月合集

A normal bacteria measures one to five micrometers long.

正常的细菌有1到5微米

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当月 VOA Special English

Microplastics can be 5 millimeters long at most or as small as one micrometer.

微塑料最可达5毫米,或小至1微米。

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Asap SCIENCE 精选

Typical 3D printers create layers approximately 100 micrometers thick, but some high-end machines can print as small as 16 micrometers.

普通的3D打印机打印出来的大约有100微米,但些高端机器打印出来的仅有16微米

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Asap SCIENCE 精选

To put this in perspective, a typical bacteria cell has a width of between 1-10 micrometers.

对比来看,个典型的细菌细胞的宽在1-10微米之间。

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听力文摘

Their speed goes from eighteen point three micrometers per second up to a whopping thirty point one.

精子的速从每秒18.3微米上升到30.1微米。

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TED-Ed(视频版)

And its volume would be one cubic micrometer.

它的体积是立方微米。

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听力文摘

Rhizobia is a nitrogen-fixing bacteria up to 3 micrometers long and without it, that sort of agricultural production is impossible.

根瘤菌是达3微米的固氮菌,没有它,不可能实现这农业生产规模的。

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《分钟地球》趣味科普

This flour sieve has 300 micrometer mesh.

这个面粉筛有 300 微米的网眼。

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呼吸系统

The distance for gas exchange is only about a half a micrometer.

气体交换的距离只有半微米左右。

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《分钟地球》趣味科普

We're talking one, or two, or 300 micrometers.

我们说的是微米, 或两微米, 或300微米。

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Space – Verge Science

But our samples are only a couple hundred micrometers wide.

但是我们的样品只有几百微米宽。

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潘潘

His work connected with" micro" because he produced micro-cards, microfilm, micrometer, micronutrient and microcomputer.

他的工作与" 微" 有关,因为他制造影卡片、缩影胶片、测微器、微量营养素和微型电子计算机。

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TED-Ed(视频版)

But things change dramatically if we make the cube ten times bigger, measuring ten micrometers on each side.

但是, 如果我们将立方体放大十倍,每边测量十微米, 情况就会发生巨大变化。

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Kurzgesagt 科普动画

You've entered the microscopic realm and are now less than 2 micrometers tall, about the size of an e coli bacteria.

你现在来到了微型王国,你的身高不足两微米,和大肠杆菌的大小差不多。

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TED-Ed(视频版)

That means you don't have to cool it down as fast, so the material can be thicker, centimeters instead of micrometers.

这也就意味着你不需要那么快降温,所以最后得到的材料变得了很多,可以达到几厘米

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SciShow 合集

And that was extremely helpful, but it didn't solve the problem of seeing things that were smaller than 0.2 micrometers.

这非常有帮助,但它并没有解决看到小于 0.2 微米的事物的问题。

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连线杂志

You know with rocket science, if you're off by one centimeter, by one micrometer, you can cause catastrophic failures to take place.

你知道,对于火箭科学来说,如果相差厘米,微米,就可能导致灾难性的故障发生。

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