便携式超声波流量计
portable ultrasonic meter
超声波声速测量
Ultrasonic velocity measurement
超声波声速计
ultrasonic wave velocimeter
存储式超声波流量计
memory ultrasonic flowmeter
反射式超声波
Reflected ultrasonic waves
环形行波超声波电机
ring-type traveling-wave ultrasonic motor
聚焦式超声波传感器
focused ultrasonic sensor
三点式超声波测角
by three-transformer type supersonic device
湿式超声波流量计
Wet ultrasonic flowrneter
手持式超声波流量计
hand-held ultrasonic flowmeter