标准传声器 meaning in Chinese

standard microphone

Laboratory standard microphones coupler reciprocity method
实验室标准传声器
Measurement microphones - part 4 : specifications for working standard microphones
测量传声器.第4部分:工作标准传声器的规范
Measurement microphones - part 1 : specifications for laboratory standard microphones
测量传声器.第1部分:实验室标准传声器规范
Specification for measurement microphones - specifications for working standard microphones
测量规范.第4部分:工作标准传声器规范
Specification for measurement microphones - specifications for laboratory standard microphones
传声器测量规范.实验室标准传声器规范

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