多声道斜束式超声流量计 2. single-path diagonal-beam flowmeter 单声道斜束式流量计 3. beam-deflection ultrasonic flowmeter 声速偏转式超声流量计 4. transit time ultrasonic flowmetr 渡越时间式超声流量计 5. ultrasonic liquid Doppler flowmeter 超声多普勒液体流量计 6. ultrasonic Doppler blood flow...