The article summarizes the application prospect of the SEM in PCB and introduces the application of the SEM in the laminated craftwork, substrate material, surface processing and other aspects.

综述了扫描电镜在印制板行业中的应用前景，介绍了扫描电镜在高精度和高密度PCB板中的层压工艺、基板材料、表面涂覆及其它一些方面的应用。

youdao

A new optical system is designed for the material surface temperature-measuring device used in laser processing. The measurement error analysis and conclusions are presented.

通过解决激光加工中材料表面温度测量装置的难点，设计了一套新型光学系统，并给出了测量误差分析及结论。

youdao

It is very difficult to control the dimension and surface quality when processing elastic material.

对于非金属弹性材料的加工，难点在于如何控制尺寸及表面质量。

youdao