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設計零件的尺寸精度、形狀精度、位置精度,表面粗糙度的選取及判定--求助 |
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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