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YT15合金刀車45號鋼,用儀表車φ14端面怎樣磨刀粗糙度能達到0.8? |
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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