楼主: apcccaoyang
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[求助] 15CrMo钢的合金含量是多少,怎么样算的,有知道的请说,谢谢 |
发表于 2010-2-19 15:54:07
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发表于 2010-2-22 11:22:21
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发表于 2010-2-22 11:23:24
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