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各位機械制造業者都醒醒吧!不要再禍國殃民了! |
點評
還有更離譜的,國標軸承,30外圓能做出30.5
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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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