3547| 7
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關(guān)于各加工方法能達到的形位公差等級,下圖提供的數(shù)據(jù)是否正確?哪條國標(biāo)可以參考? |
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點評
具體是哪本書哪一章節(jié)?
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點評
贊同
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點評
沒錯,技術(shù)更新比標(biāo)準(zhǔn)更新快。不過起碼是個參考
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