如果管壁经受不起合力的切削作用，就有金属颗粒脱离母体而流失。

If the wall bear force of the cutting, metal particles from the matrix and erosion.

youdao

如果管壁经受不起合力的切削作用，就有金属颗粒脱离母体而流失。

If the wall bear force of the cutting, metal particles from the matrix and erosion.

youdao