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GB/T 4854.1-2004  China national standard english version:

　
GB
中华人民共和国国家标准
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 4854.1-2004

Acoustics--Reference zero for the calibration of audiometric equipment--Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
声学 校准测听设备的基准零级 第1部分:压耳式耳机纯音基准等效阈声压级
Issued Date:2004-05-13 　 Implemented Date:2004-12-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 4854.1-2004
Standard Category China National Standards
GB Standard English Title Acoustics--Reference zero for the calibration of audiometric equipment--Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
GB Standard Chinese Title 声学 校准测听设备的基准零级 第1部分:压耳式耳机纯音基准等效阈声压级
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