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wwjxgz 发表于 2013-1-10 09:52 static/image/common/back.gif" G/ F0 J1 v/ O: N2 B; c 60Si2MnA或者50CrVA,市场上很容易采购到的。
jin70 发表于 2013-1-13 09:35 http://www.3dportal.cn/discuz/static/image/common/back.gif 6 r5 ~/ l* f4 F5 e: y可以试试65Mn
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