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

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