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标题: JIS A 1416:2000 [打印本页]

作者: lotus999    时间: 2014-12-3 09:36:52     标题: JIS A 1416:2000

JIS A 1416:2000 Acoustics-Method for laboratory measurement of airbornesound insulation of building elements
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作者: admin    时间: 2014-12-3 09:48:42

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