2698| 2
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3×12冷拉Q235-A材料在120°弯曲后,钻φ4孔进行铆接,发现有断裂现象---求助 |
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小黑屋|手机版|Archiver|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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