3300| 26
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求加工变齿厚齿轮的企业? |
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发表于 2013-8-30 22:51
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发表于 2013-8-31 14:16
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点评
你仔细看图纸了吗?
有没有觉得有什么问题
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发表于 2013-8-31 15:20
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