7650| 14
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關于螺紋公差等級 |
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點評
看你的資料的意思是先加工螺紋到公差位后鍍層,學習了!
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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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