namedyogurt 发表于 2016-8-5 20:52:36

ISO 717-2-2013 Acoustics - Rating of sound insulation in buildings and of …

名字很长，标题写不下......ISO 717-2-2013 Acoustics - Rating of sound insulation in buildings and of building elements - part 2





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admin 发表于 2016-8-8 16:39:19

谢谢您的分享，金币已奖励!
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