doppler blood flow signal 多普勒血流信号
doppler ultrasonic blood flow signal 超声多普勒血流信号
Doppler ultrasound blood flow signal 多普勒超声血流信号
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.
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。
Renal contusion detected by Color Doppler reflected decreased or normal blood flow signal.
彩色多普勒显示肾内血流信号减少或无明显异常。
The Doppler blood flow signal is inherently a nonstationary Gaussian random process whose time-frequency representation associates with the time-varying velocity of blood flow and its variations.
多普勒超声血流信号是一个非平稳的高斯随机过程，其时频分布与血流的速度及其变化有密切的关系。
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