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有大神能帮忙看看这个产品的加工工艺吗 |
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点评
热处理之后硬度这么高,怎么加工?
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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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