9546| 27
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cr12淬火硬度55度漏加工三个孔,求助 |
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点评
OSG的WH55-5D就能干了,另外补充一点WH70-DRL和SH-DRL最高能干到70HRC
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点评
直线度要求如何?
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点评
金刚石。。。。
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点评
哈哈,看你楼上和楼下
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