BS EN 20140-9:1994

Заменен

Acoustics. Measurement of sound insulation in buildings and of building elements, Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it — 16 стр.

Описание Изменения Ссылки Версии

Заменен на

BS EN ISO 10848-2:2006

ICS

91.120.20 Acoustics in building. Sound insulation / Акустика в зданиях. Звукоизоляция