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