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。
The present invention belongs to the processing of material or similar material.
本发明属于材料或类似材料的加工。
The present invention belongs to the processing of material or similar material.
本发明属于材料或类似材料的加工。
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