NEN ISO 140-9:1994现行
Acoustics - Measurement Of Sound Insulation In Buildings And Building Elements - Part 9: Laboratory Measurement Of Room-to-room Airborne Sound Insulation Of A Suspended Ceiling With A Plenum Above It
出版：Nederlands Normalisatie Instituut
专家解读视频
基本信息
标准编号： NEN ISO 140-9:1994
发布时间：1994/8/1 0:00:00
标准类别：Standard
出版单位：Nederlands Normalisatie Instituut
标准页数：6
标准简介
Defines a laboratory method of measuring the airborne sound insulation of a suspended ceiling with a plenum of defined height mounted above an acoustical barrier, which separates two rooms of a specified test facility.
等同采用的国际标准
ISO 140-9:1985 - Identical
