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[材料] 制造齿轮用的材料???? |
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发表于 2009-8-21 20:52
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发表于 2009-8-22 07:54
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发表于 2009-8-24 11:39
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发表于 2009-8-24 16:42
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发表于 2009-9-22 12:52
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点评
20CrMnTiH是基于20CrMnTi的一种被称为保证淬透性能钢材。对材料的淬透一致性有要求。
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发表于 2011-2-3 23:57
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