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[求助] 20CrMnTi钢碳氮共渗后硬度为HRC70? |
发表于 2008-6-6 21:04:53
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发表于 2008-6-6 23:01:57
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发表于 2008-6-7 08:12:17
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发表于 2008-6-7 08:36:16
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发表于 2008-6-7 17:59:59
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发表于 2008-6-7 19:31:58
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