GB/T 21229-2007

Acoustics - Determination of sound power levels of noise from air-terminal devices,air-terminal units,dampers and valves by measurement in a reverberation room

NORMA vydána dne 14.11.2007

The information about the standard:

Designation standards: GB/T 21229-2007
Publication date standards: 14.11.2007
Country: Chinese technical standard
Kategorie: Technické normy GB