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请问一下,有没有哪家轴承,轴瓦产品用到进口碳化硅石墨复合材料或德国schunk... |
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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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