名詞 millimeter:

1. a metric unit of length equal to one thousandth of a meter
   同義詞：millimetre, mm

1. The edge must be machined to 0.02 millimeters.
   這邊緣必須切割到0.02毫米的精密度。
2. A unit of retinal illumination, equal to the amount of light that reaches the retina through 1 square millimeter of pupil area from a surface having a brightness of 1 candela per square meter.
   光度視網(wǎng)膜亮度單位，相當(dāng)于每平方米有一燭光亮度的表面，通過(guò)一平方毫米的瞳孔區(qū)域，到達(dá)視網(wǎng)膜的光線數(shù)量

mil.li.me.ter

n.Abbr. mm（名詞）縮寫 mm
A unit of length equal to one thousandth (0-3) of a meter, or 0.0394 inch. See table at measurement
毫米：長(zhǎng)度單位，等于千分之一(0-3)米或0.0394英寸 參見 measurement