After using this instrument, the true value of the spherical diameter size could be measured.

使用该仪器后，可测出球面直径尺寸的真实值。

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Is it true that there is no direct conversion between the aperture size (diameter) and meshes of silk screen?

丝网孔度(直径)和目之间是否无法直接换算？

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Is it true that there is no direct conversion between the aperture size (diameter) and meshes of silk screen?

丝网孔度(直径)和目之间是否无法直接换算？

youdao