6461| 18
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16Mn換成Q235可以么,最近生意不太好,老板要降低成本 |
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另外建議樓主,學到東西趕快走人吧! 如果是冷軋機設備的話?
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早死早好
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Archiver|手機版|小黑屋|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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