6339| 7
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1Cr17能否热处理到HRC38-41硬度? |
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发表于 2007-12-29 12:55:33
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发表于 2008-5-13 19:49:59
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求助同志
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发表于 2009-5-17 14:02:00
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发表于 2009-5-18 17:05:43
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