一微米等于千分之一毫米。针头直径大约一毫米。
One micron is a thousandth of a millimeter: a pinhead is about a millimeter across.
这些线可能仅有千分之一毫米那么粗，所以要用这些线进行编织是很麻烦的，并且费用也相当昂贵。
But the weaving of these yarns, which may be only one-thousandth of a millimetre thick, is complicated and expensive.
韦茨和他的同事们发明了一种产生相同尺寸液晶微滴的技术，每一滴大约12微米（一微米等于千分之一毫米）。
A technique invented by Weitz and his colleagues produces equal-sized droplets of liquid crystal, each about a dozen microns across (a micron is one thousandth of a millimeter).
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