| Gb | Eng |
|---|
| 这边缘必须切割到0.02毫米的精密度。 | The edge must be machined to 0.02 millimeters. |
| 水晶石石英断片，直径4到64毫米（0。16到2。51英寸），尤指天然圆形的石英颗粒 | A rock fragment between4 and64 millimeters(0.16 and2.51 inches) in diameter, especially one that has been naturally rounded. |
| 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 | 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. |
| 密耳长度单位，等于一英寸的千分之一（10－3）（0。0254毫米），如用来标明电线的直径或按页出售的材料的厚度 | A unit of length equal to one thousandth(10-3) of an inch(0.0254 millimeter), used, for example, to specify the diameter of wire or the thickness of materials sold in sheets. |
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