4178| 13
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談談不完全互換裝配法 |
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點評
納尼!
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點評
概率法嗎?3西格瑪 ,保證在99.7%的合格率,還有0.3%的不合格率嘛
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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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