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EVS-EN ISO 3744:2005 Akustika. Müraallikate helivõimsuse taseme määramine helirõhu abil. Tehniline meetod mõõtmiseks põhiliselt vabas väljas peegeltasapinna kohal = Acoustics. Determination of power levels of noise sources using sound pressure. Enginee...
Editor: Henn Voolaid, Author: Eesti Standardikeskus, Eesti. Majandus- ja Kommunikatsiooniministeerium
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