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标题: 求助BS EN 50332-1:2013 [打印本页]

作者: fjjian    时间: 2013-12-10 23:44:17     标题: 求助BS EN 50332-1:2013

BS EN 50332-1:2013. Sound system equipment: Headphones and earphones associated with personal music players. Maximum sound pressure level measurement methodologyGeneral method for "one package equipment"

作者: liuxilin1215    时间: 2013-12-10 23:44:18

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