1287| 8
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不銹鋼槽鋼折彎難題 |
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點評
半徑小更不可能,因為那是槽鋼,不是鋼板。
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小黑屋|手機版|Archiver|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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