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标题: ASTM B 49-1998（Repproved 2004) Standard Specification for Copper Rod Drawing [打印本页]

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作者: alldoing1    时间: 2018-5-17 13:05:02     标题: ASTM B 49-1998（Repproved 2004) Standard Specification for Copper Rod Drawing

ASTM B 49-1998（Repproved 2004)  Standard Specification for Copper Rod Drawing Stock for Electrical Purposes
电气用铜棒拉制坯料的标准规范

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作者: admin    时间: 2018-5-17 16:59:04


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