
ROAD TRAFFIC NOISE REDUCING DEVICES - TEST METHOD FOR DETERMINING THE ACOUSTIC PERFORMANCE - PART 1: INTRINSIC CHARACTERISTICS OF SOUND ABSORPTION UNDER DIFFUSE SOUND FIELD CONDITIONS
出版:Comite Europeen de Normalisation

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ROAD TRAFFIC NOISE REDUCING DEVICES - TEST METHOD FOR DETERMINING THE ACOUSTIC PERFORMANCE - PART 1: INTRINSIC CHARACTERISTICS OF SOUND ABSORPTION UNDER DIFFUSE SOUND FIELD CONDITIONS
出版:Comite Europeen de Normalisation
专家解读视频