1·Aerosol particles smaller than 2.5 micrometers pose the greatest risk to human health because they are small enough to be breathed deep into the lungs and, in some cases, enter the blood stream.
小于2.5微米的悬浮微粒对人体的健康造成了最大的危害因为它们小到可以被吸入肺部深处，在某些情况下，还会进入血液中。
2·But until now, the movements have always been restricted to very small scales, typically across distances of a few hundred micrometers, and mostly in liquids.
但时至今日，移动的距离一直限制在很小的范围内，通常能移动几百微米的距离，且大部分都是在液体中移动。
3·The thinner the lines are, the closer they can get without causing this problem, but the printing process can't make them thinner than about 120 micrometers.
所以这些银线越细，他们能够更加密集的分布在电池上而又不会产生问题，但印刷的过程使这些银线的宽度不能小于120微米。
4·Red aurora are generated by light emitted at a longer wavelength (0.630 micrometers), and other colors such as blue and purple are also sometimes observed.
红色的极光是由较长波长(0.630微米)的发出光引起的，有时也会观察到其他诸如蓝色和紫色的极光。
5·The new Big Bang simulator is tiny - its width is only a few fractions of centimeters (20 micrometers).
这个新模拟的大爆炸是迷你型的，其宽度只有厘米的几千分之一(20微米)。
1·Must be familiar with measuring equipment such as micrometers, verniers, plug gauges, dial bores and various dial indicators.
熟悉测量设备装置，诸如：千分尺、标尺、形测孔规、度钻孔及多样化的千分表。
2·Describe and review measurement methods such as attribute screens, gauge blocks, calipers, micrometers, optical comparators, tensile strength, titration, etc.
描述和评价测量方法，例如：属性筛选法、块规法、测径器、千分尺、光学比较仪、抗张强度、滴定等。
3·Ability to use Callipers, Micrometers, Gauges, Profile Projector, Gauge Block.
能使用测径规，千分尺，测量仪表，轮廓测定投影器，块规。
4·But I doubted whether Tony had the capacity to read blueprints and micrometers or do precision work.
可我怀疑托尼是否有能力学会看图纸、用千分尺，是否胜任做精密加工工作。