NF S31-046-1988
Статус: Дата введения в действие:
| Обозначение | NF S31-046-1988 |
|---|---|
| Заглавие на английском языке | ACOUSTICS. AIR DISTRIBUTION AND AIR DIFFUSION. DETERMINATION OF SOUND POWER LEVELS FROM AIR TERMINAL DEVICES,HIGH/LOW PRESSURE DEVICES,DAMPERS AND VALVES BY MEASUREMENT IN A REVERBERATION ROOM. |