Povučen
Specifies a laboratory substitution method to determine the insertion loss of ducted circular and rectangular silencers without flow, as well as other duct elements for use in ventilating and air-conditioning systems.
POVUČEN
ISO 11691:1995
95.99
Povučen
1. 7. 2020.
OBJAVLJEN
ISO 11691:2020
Akustika — Određivanje slabljenja nivoa zvučne snage za prigušivače kanala bez protoka — Laboratorijska informativna metoda
95.99 Povučen