器声 meaning in Chinese

noise

Sound pressure levels of ac power circuit breakers , measurement of
交流电流断路器声压级的测量
Methods for the measurement of sound pressure levels of ac power circuit breakers
交流电源断路器声压电平的测量方法
Measurement of acoustic power of piston transducer based on calorimetry
一种基于量热法的平面换能器声功率测量的方法
Comparative analysis of measuring methods for sound level in transformers and reactors
变压器和电抗器声级测量方法的对比分析
Characterization of acoustic stealth of the underwater vehicle and related technological progress
水下航行器声隐蔽性的表征与技术进展

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