binyew 发表于 2014-11-3 10:14:38

ISO 3898-2013 Bases for design of structures - Names and symbols of physical qua

ISO 3898-2013 Bases for design of structures - Names and symbols of physical quantities and generic quantities - Fourth Edition

admin 发表于 2014-11-3 11:55:48

谢谢您的分享，金币已奖励

ygs67 发表于 2015-9-9 17:03:39

多谢分享！                             

phopoudam 发表于 2017-5-20 11:06:19

结构设计基础.符号表示法.一般符号
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