NEN ISO 1999:1990被替代
Acoustics - Determination Of Occupational Noise Exposure And Estimation Of Noise-induced Hearing Impairment
出版：Nederlands Normalisatie Instituut
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基本信息
标准编号： NEN ISO 1999:1990
发布时间：1990/4/1 0:00:00
标准类别：Standard
出版单位：Nederlands Normalisatie Instituut
标准页数：18
标准简介
Specifies a method for calculating the expected noise-induced permanent threshold shift in the hearing threshold levels of adult populations due to various levels and durations of noise exposure.
替代本标准的新标准
等同采用的国际标准
ISO 1999:1990 - Identical
