GB/T 17248.5-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections
2018GB/T 17248.5-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections
1999GB/T 17248.5-1999 Acoustics--Noise emitted by machinery and equipment--Measurement of emission sound pressure levels at a work station and at other specified positions--Method requiring environmental corrections