Methods: the high-frequency Doppler ultrasonography testing has been diagnosed with varicocele on the left side of the male patients with 106 cases.

方法应用高频超声多普勒检测已确诊的左侧精索静脉曲张男性患者106例。

youdao

If you stay where you are and you don't move and I move these tuning forks, you will hear a different frequency and that's what we call Doppler effect.

如果我站在这里，你们不移动，我移动这些音叉，那么你们会听到不同，频率，这就是我们，所说的多普勒效应。

youdao

With modern spectral estimation algorithm, spectrum analysis on Doppler frequency caused by vehicles radar movement is carried out in DSP chip.

利用现代谱估计的算法，在DSP芯片中对检测车辆雷达运动产生的多普勒频率进行频谱分析。

youdao

And since a moving object causes a tiny change (known as a Doppler shift) in the frequency of the reflected signal, Silent Sentry can also calculate how fast it is moving.

ECONOMIST: Remote sensing