6896| 40
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加工有難度的一個(gè)工件 |
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點(diǎn)評(píng)
是的你沒(méi)看錯(cuò),還有正負(fù)一個(gè)絲公差
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點(diǎn)評(píng)
要不我怎么能說(shuō)難加工能
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