10165| 14
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為什么轉速越高,粗糙度就越好? |
點評
大俠在刀具上的造詣,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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