论坛 › 〖国外标准〗 › ASTM A 729-93 Standard Specification for Alloy Steel Axles, Heat-Treated, for Ma
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发表于 2007-6-27 08:03:59
ASTM A 729-93 Standard Specification for Alloy Steel Axles, Heat-Treated, for Ma
ASTM A 729-93 Standard Specification for Alloy Steel Axles, Heat-Treated, for Mass Transit and Electric Railway Service
ASTM A 729-93 货物运输及电气铁路用热处理合金钢轴的标准规范