lotus999 发表于 2014-12-3 09:34:44

JIS A 1418-2:2000

JIS A 1418-2:2000 Acoustics-Measurement of floor impact sound insulation of buildings-Part 2:Method using standard heavy impact sources

admin 发表于 2014-12-3 09:48:31

谢谢您的分享,金币已奖励
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