水声探测设备 acoustic underwater survey equipment

超声检测设备 ultrasonic test equipment

回声测距设备 echo-ranging equipment

噪声测量设备 noise-measuring equipment

船用回声测深设备 Marine echo-sounding equipment

超声波测试设备 [声] ultrasonic testing equipment

噪声负载测试设备 [电子] noise loading test set

声强量测设备 Sound Intensity Measurement Equipment

超声波检测设备 Ultrasonic Testing Equipment