2287| 5
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在什么加工條件下使用內冷刀具,? |
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點評
深孔要用油了,,而且是高壓!
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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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