ygs67 发表于 2015-11-20 16:52:47

ASTM A472_A472M-07(R12)

ASTM A472_A472M-07(R12) Standard Specification for Heat Stability of Steam Turbine Shafts and Rotor Forgings

阿谢克那·李 发表于 2015-11-20 23:35:26

ASTM A472_A472M-07(R12)            

admin 发表于 2015-11-21 10:24:53

谢谢您的分享,金币已奖励!
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