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立铣刀加工直径6.8孔径,里面有刀痕像螺纹一样一圈一圈的,怎么解决? |
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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