15893| 38
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機床零件材料選用 |
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點評
好吧。。。。。。受力不大,可以加工微米級的零件,強
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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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