millimeter

名词 millimeter:

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

1. The edge must be machined to 0.02 millimeters.
   这边缘必须切割到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.
   光度视网膜亮度单位，相当于每平方米有一烛光亮度的表面，通过一平方毫米的瞳孔区域，到达视网膜的光线数量

mil.li.me.ter

n.Abbr. mm（名词）缩写 mm
A unit of length equal to one thousandth (0-3) of a meter, or 0.0394 inch. See table at measurement
毫米：长度单位，等于千分之一(0-3)米或0.0394英寸 参见 measurement