liuxilin1215 发表于 2015-5-13 20:23:57

SSC-253-1976 A GUIDE FOR THE NONDESTRUCTIVE TESTING OF NON-BUTT WELDS IN COMMERC

SSC-253-1976 A GUIDE FOR THE NONDESTRUCTIVE TESTING OF NON-BUTT WELDS IN COMMERCIAL SHIPS
PART ONE
This document has been approved for public release and sale; its distribution is unlimited.

admin 发表于 2015-5-14 11:13:23

谢谢您的分享,金币已奖励!
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