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fjjian 发表于 2013-12-10 23:44:17

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"

liuxilin1215 发表于 2013-12-10 23:44:18

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