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Badania były prowadzone w warunkach laboratoryjnych oraz w dwóch zakładach przemysłowych indywidualne tłumienie PAR(Personal Attenuation Rating)wkładek przeciwhałasowych było mierzonez wykorzystaniem systemu pomiarowego VeriPrpo, który został opracowany w laboratorium Howard Leight Honeywell Hearing Laboratory. Badano indywidualne tłumienie PAR siedmiu modeli wkładek jednorazowego użytku oraz dwóch...
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