NEN ISO 140-9:1994現行
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
專家解讀視頻
基本信息
標準編號： NEN ISO 140-9:1994
發布時間：1994/8/1 0:00:00
標準類別：Standard
出版單位：Nederlands Normalisatie Instituut
標準頁數：6
標準簡介
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.
等同采用的國際標準
ISO 140-9:1985 - Identical
