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标题: JIS A 1419-1:2000 [打印本页]

作者: lotus999    时间: 2014-12-3 09:34:06     标题: JIS A 1419-1:2000

JIS A 1419-1:2000 Acoustics-Rating of sound insulation in buildings and of building elements-Part 1:Airborne sound insulation
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作者: admin    时间: 2014-12-3 09:48:28

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