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标题: ASTM A291-05(2015) [打印本页]

作者: wanderer1997 时间: 2015-11-11 00:01:07 标题: ASTM A291-05(2015)

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ASTM

A291

M-05(2015) Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears

作者: admin 时间: 2015-11-11 09:52:35

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