wanderer1997 发表于 2015-11-10 23:57:57

ASTM A418-2015



ASTM A418/A418M-15 Standard Practice for Ultrasonic Examination of Turbine and Generator Steel Rotor Forgings

admin 发表于 2015-11-11 09:52:30

谢谢您的分享,金币已奖励!
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