... air-flow measurement 风流测量 ultrasonic liquid-flow measurement 超声流速测量 culvert-flow discharge measurement 涵管测流法 ...
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超声血流仪实现其测量血流速度的关键是多普勒频移信号的提取，多普勒频移信号是血流速度的真实反映。
As Doppler shift signal can significantly reflect the speed of flow, the abstracting of Doppler shift signal is the key of blood flow speed testing in a ultrasonic blood flow detector.
本文运用相关分析方法测量流速和流量，证明了超声波相关法测量流量的可行性。
The noise spectra of ultrasonic cleaners are measured by two methods, and the noise characteristics are discussed.
二维超声测量肾脏的大小；多普勒流速曲线分析肾脏血流动力学的改变。
The sizes of kidneys were evaluated by two-dimensional ultrasound while the changes of hemodynamics were analyzed by Doppler velocity Tracing.
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