楼主: 齿轮小二
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[热处理] 美国齿轮有效渗碳层深度标准 |
发表于 2011-2-23 18:43
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发表于 2011-9-1 19:27
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点评
重载情况,一般情况
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发表于 2011-9-24 21:22
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