China 'GB/T 20441.2-2018
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20441.2-2018
Electroacoustics—Measurement microphones—Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique 电声学 测量传声器 第2部分：采用互易技术对实验室标准传声器声压校准的原级方法
Issued Date:2018
Implemented Date:2018
Issued by:
The Standardization Administration of the People's Republic of China
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