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IEC 60704-2-1-2020 pdf download
IEC 60704-2-1-2020 pdf download.Household and similar electrical appliances – Test code for the determination of airborne acoustical noise – Part 2-1: Particular requirements for dry vacuum cleaners. 4 Measurement methods and acoustical environments This clause of Part 1 is applicable except as follows: 4.2 Direct method Addition: If pure tone...