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水压机上自由锻件机械加工余量与公差 筒体类

Machining allowance and tolerancd of open die forgings on hydraulic press - Cylinder
标准号:JB/T 9179.7-1999
Machining allowance and tolerancd of open die forgings on hydraulic press - Cylinder
标准号:JB/T 9179.7-1999