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Q235鐵板上加工方型槽,工藝和刀具請教 |
點評
這個我看了都怕
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點評
q235 材質有必要回火??
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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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