2946| 4
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鋁合金表面的微小劃痕是否影響鋁合金的性能? |
您說的應該是積壓痕
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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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