测量水听器 meaning in Chinese

measurement hydrophone

Verification regulation of measuring hydrophone in the range 500hz 1mhz
500hz 1mhz测量水听器检定规程
Verification regulation of measuring hydrophone in the frequency range 1hz to 1000hz
1hz 1000hz测量水听器检定规程
Acoustics - measurement and characterisation of ultrasonic fields in the frequency range 0 . 5mhz to 15mhz - hydrophone method
声学在0 . 5 15mhz频率范围内的超声场特性及其测量水听器法