... 除注明处外 unless otherwise noted 冲连皮 punching the wad / punching the slug 冲孔 pierce ...
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通过冲连皮工艺试验及批量生产，证明采用冲连皮工艺能够应用于活塞销加工过程；
Through stamping technology test and batch yield, it is proved that the process can be applicable to piston pin manufacture;
通过冲连皮工艺试验及批量生产，证明采用冲连皮工艺能够应用于活塞销加工过程；
The effective adopting stamping process on piston pin product quality and belemnoid demension is explained;
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