随着机械加工自动化程度的提高，对表面粗糙度在线测量提出了越来越高的要求。
The advance in manufacturing automation has created the need to develop in-process measurement of surface roughness.
随着机械加工自动化程度的提高，对表面粗糙度在线测量提出了越来越高的要求。
The advance in manufacturing automation has created the need to develop in-process measurement of surface roughness.
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