标题: BS EN 50332-1-2013 Sound system equipment: Headphones and earphones associated w [打印本页] 作者: liuxilin1215 时间: 2015-11-21 12:44:58 标题: BS EN 50332-1-2013 Sound system equipment: Headphones and earphones associated w
BS EN 50332-1-2013 Sound system equipment: Headphones and earphones associated with personal music players — Maximum sound pressure level measurement methodology Part 1: General method for "one package equipment"