China Electroacoustics—Mea GB Standards Search Result

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	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 - 英文版
	GB/T 20441.6-2017 Electroacoustics—Measurement microphones—Part 6: Electrostatic actuators for determination of frequency response 电声学测量传声器第6部分：用于测定频率响应的静电激励器 - 英文版
	GB/T 20441.5-2017 Electroacoustics—Measurement microphones—Part 5: Methods for pressure calibration of working standard microphones by comparison 电声学测量传声器第5部分：工作标准传声器声压校准的比较法 - 英文版

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