5063| 10
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42CrMoA的材料,直徑18的孔,車削粗糙度能達到1.6嗎 |
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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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