ygs67 发表于 2015-6-16 15:19:10

ASTM E527-12

ASTM E527-12 Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

admin 发表于 2015-6-18 08:28:04

谢谢您的分享,金币已奖励
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