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  4. Standard "GB/T 4854.4-1999"
Standard GB/T 4854.4-1999 8.3.1999 preview

GB/T 4854.4-1999

Acoustics--Reference zero for the calibration of audiometric equipment--Part 4:Reference levels for narrow-band masking noise

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STANDARD published on 8.3.1999


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144.00 USD

The information about the standard:

Designation standards: GB/T 4854.4-1999
Publication date standards: 8.3.1999
SKU: NS-885186
Country: Chinese technical standard
Category: Technical standards GB

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Noise with respect to human beings

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