The frequency spectrum of continuous wave Doppler composed of two merged regurgitant jets.
二尖瓣返流连续多普勒频谱为2束返流共同形成的叠加频谱；
The first part is the analysis of why the low altitude is limited in frequency modification continuous wave Doppler navigation radar.
第一部分分析了调频连续波多普勒导航雷达存在低高度限制的原因。
To confirm the utility of continuous wave Doppler echocardiography in assessing pulmonary artery wedge pressure in patients with mitral regurgitation.
目的探讨连续波多普勒超声在评估二尖瓣返流患者的肺动脉楔压中的作用。
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