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9341| 27
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cr12淬火硬度55度漏加工三個孔,求助 |
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點評
OSG的WH55-5D就能干了,另外補充一點WH70-DRL和SH-DRL最高能干到70HRC
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點評
直線度要求如何?
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點評
金剛石。。。。
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點評
哈哈,看你樓上和樓下
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