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外能外圆磨床上的内圆磨具转速10000转时,噪音的标准应该不大于多少分贝? |
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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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