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公司用D16槍鉆加工零件時,,在深度500mm時槍鉆頭斷在零件中 |
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,浙公網安備33038202004372號 )
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