ygs67 发表于 2015-11-19 08:46:10

ASTM A456_A465M-08(R13)

ASTM A456_A465M-08(R13) Standard Specification for Magnetic Particle Examination of Large Crankshaft Forgings

admin 发表于 2015-11-19 10:38:02

谢谢您的分享,金币已奖励!
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