谁有这两个标准呢?
ISO2639:2002 case-hardened depth(of a carburized and hardened case)ISO3754:1976 effective depth ofhardening(afterinductionorflamehardeningofsteel) ISO 2639 :
http://www.rclbbs.com/forum.php?mod=viewthread&tid=75132&extra=page%3D1
ISO 3754:
http://www.rclbbs.com/forum.php?mod=viewthread&tid=84549&extra=
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