GBJ 47-1983

Acoustics-sound-abserbin coefficient measurement by method of reverbration room (Trial)

NORMA vydaná dňa 5.1.1983

The information about the standard:

Designation standards: GBJ 47-1983
Note: NEPLATNÁ
Publication date standards: 5.1.1983
Country: Chinese technical standard
Kategória: Technické normy GB