famenvalve 发表于 2007-6-27 08:04:37

ASTM A 713-93 Standard Specification for Steel Wire, High-Carbon Spring, for Hea

ASTM A 713-93 Standard Specification for Steel Wire, High-Carbon Spring, for Heat-Treated Components
ASTM A 713-93 热处理部件用高碳弹簧钢丝的标准规范
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