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有什么材料耐高温,耐磨的,滚轮在700-1000温度下滚动,一下就磨烂了 |
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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