8449| 18
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箱体类的能通过折弯来实现吗? 就是尽量减少焊缝,有密封要求的 |
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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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