Acoustics. Sound absorbers for use in buildings. Rating of sound absorption
声学建筑物用吸音器 吸声率

1997-11-15

건축물용 흡음재의 흡음성능 평가방법
吸声材料在建筑使用 - 吸声评级

2003-06-10

건축물용 흡음재의 흡음성능 평가방법
声学建筑用吸声器吸声等级

2003-06-10

Acoustics — Sound absorbers for use in buildings — Rating of sound absorption
声学——建筑用吸音器——吸声率

1997-03-27

Sound absorbers for use in buildings - Rating of sound absorption (ISO 11654:1997)
声学.建筑物用吸声器.吸声等级（ISO 11654-1997）；德文版EN ISO 11654:1997

1997-07-01