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立銑刀加工直徑6.8孔徑,,里面有刀痕像螺紋一樣一圈一圈的,怎么解決? |
小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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