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。
Methods Using color Doppler flow imaging to detect the pulmonary blood color and continuous wave Doppler echocardiogram to measure the pulmonary flow velocity.
方法用彩色多普勒超声观察心腔和肺动脉内的血流颜色变化，并用连续多普勒超声测量肺动脉内血流速度。
An X band low cost, simple and compact continuous wave Doppler radar is presented. The whole front end is designed using hybrid microwave integrated circuits (mic).
本文介绍了一种X波段低成本、结构简单、小型化的连续波多普勒雷达，雷达前端采用微波混合集成电路(mic)。
For a Doppler radar homing seeker with high pulse repetition frequency, the continuous wave approximation is not only simple, but also has a high calculation accuracy.
对于使用高脉冲重复频率的主动多普勒雷达导引头，连续波近似法不仅计算相对简单，而且可以给出较高的计算精度。
The baseline flow was estimated with continuous-wave Doppler by recording the time-velocity at mid-vessel.
用彩色多普勒超声血流仪检测血管中央的时间-流速，以评估血流量的基线。
Objective To assess the intracranial collateral circulation with cervical continuous-wave Doppler.
目的探讨颈动脉连续波多普勒超声评估颅内侧支循环。
This paper expouds the characteristics of quasi-continuous wave(CW) radar, and compares the pulse Doppler radar with CW radar and quasi-CW radar.
阐述了准连续波雷达的特点，并对脉冲多普勒雷达、连续波雷达和准连续波雷达进行了比较，结果表明准连续波雷达优于脉冲多普勒雷达和连续波雷达。
This paper expouds the characteristics of quasi-continuous wave(CW) radar, and compares the pulse Doppler radar with CW radar and quasi-CW radar.
阐述了准连续波雷达的特点，并对脉冲多普勒雷达、连续波雷达和准连续波雷达进行了比较，结果表明准连续波雷达优于脉冲多普勒雷达和连续波雷达。
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