BS EN 20140-9:1994(1999) 聲學 — 建筑物和建筑構件的隔音測量 第9部分:上方有靜壓室的吊頂的房間到房間空氣傳播隔音的實驗室測量
Acoustics — Measurement of sound insulation in buildings and of building elements — Part 9 : Laboratory measurement of room - to - room airborne sound insulation of a suspended ceiling with a plenum above it