6779| 7
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所謂加工精度是:“公差帶寬度”還是“公差值精確到的位數” |
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點評
贊同
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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