2281| 4
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扎制板材表面紋是什么狀態? |
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點評
不銹鋼冷軋板有鏡面的,Q235沒見過有鏡面。冷軋后有做拋研的
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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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