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硬质合金钻头不耐用请大神分析下 |
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点评
是的融屑空间小了点
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点评
一看就是行家啊
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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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