4138| 3
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切刀面要求平行度0.002以內,切二次,孔口毛刺不好交接,有什么好的辦法 |
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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