2761| 9
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求各位大神看看这个零件用在哪里 |
点评
看材质和热处理要求就更能判定了。
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Archiver|手机版|小黑屋|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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