ACOUSTICS. DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES. PRECISION METHODS FOR DISCRETE-FRECUENCY AND NARROW-BAND SOURCES IN REVERBERATION ROOMS. (ISO 3742:1988).
NORMA vydaná dňa 7.6.1993
Designation standards: UNE 74032:1993
Note: NEPLATNÁ
Publication date standards: 7.6.1993
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE