BS 2497-4:1972被替代
Specification for a reference zero for the calibration of pure-tone audiometers. Normal threshold of hearing for pure tones by bone conduction
出版：British Standards Institution
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基本信息
标准编号： BS 2497-4:1972
发布时间：1972/7/25 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：0
标准简介
Specifies value of acceleration corresponding to the audiometric zero for bone conduction listening to pure tones.
标准备注
© British Standards Institution 2013
等同采用的国际标准
ISO 7566:1987 - Similar
