目的：探讨彩色多普勒速度能量图肾脏血流测定对高血压各期肾损害的诊断价值。
Objective: to explore the diagnostic value in different stages of renal damage due to hypertension with color Doppler speed energy graph examination in renal blood flow.
目的采用组织多普勒速度成像（TVI）评价不同阶段慢性肾脏疾病患者的左心功能变化。
Objective To evaluate left heart function in pre-dialysis patients with different stages of chronic kidney disease (CKD) by tissue Doppler velocity imaging (TVI).
利用多普勒雷达资料对烟台市一次初春暴雪天气的多普勒速度和风场结构特征进行了分析。
The paper analyses the evolution of Doppler velocity and the structure of the wind field during a infrequent snowstorm of earlier spring taken place in Yantai by using Doppler radial products.
多普勒速度场、回波顶高、垂直液态含水量、对应的上升气流以及温度平流对这次降水具有预报指示意义。
The vortex in Doppler velocity field, Echo tops, Vertical integrated liquid, lift stream and cold advection are significant in this rainfall case.
对51例房间隔缺损（ASD）患者术前进行彩色多普勒速度图（CDV）和彩色多普勒速度能量图（CCD）检查，对房水平分流的方向、分流束的边界连续性及彩色充填进行观察对比分析。
To exlore the dignostic validation of CCD on atrium level shunt and compare it with CDV, 51 patients of atrial septal defect( ASD) received CDV and CCD examination before operation.
径向速度法，也被称为多普勒摆动技术，用于搜索恒星光线的摆动，它显示出来自轨道上运行的行星的万有引力。
Radial velocity, also known as the Doppler wobble technique, involves searching for wobbles in a star's light that indicate the gravitational pull of an orbiting planet.
利用智利的天文望远镜，天文学家测量了三裂星云中气体的多普勒频移和速度。
By using telescopes in Chile, the astronomers measured Doppler shifts and thus velocities of gas in the Trifid.
为了探究速度滑冰运动员形态结构与功能特征，利用彩色多普勒血流显像仪对21名速滑运动员的左心室进行检查。
In order to explore the speed skaters' characteristics of physique structure and function, this paper USES color Doppler Blood Stream Picture Instrument to inspect left ventricle of 21 speed skaters.
当它再一次到这里-,当速度和你们之间的,撇又等于f，then，f，prime，equals，f，again。,这个现象被称为,多普勒效应。
And when it is here again-- when the angle between f And so this phenomenon is called the Doppler effect.
在某相位编码毫米波雷达系统中，要求很高的目标速度测量精度，因而目标多普勒频率测量电路的设计比较重要。
The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed.
跳频信号中载频的跳变会引起多普勒频率的变化，这对距离的处理产生影响，必须进行速度门的处理。
It will be affect the range processing that the frequency agile of carrier in frequency agile signal arouse the variety of Doppler frequency, so the compensate of velocity door is obligatory.
在某相位编码毫米波雷达系统中，由于对目标速度测量精度的要求很高，因此目标多普勒频率测量电路的设计也具有比较重要的地位。
The design of target Doppler frequency measurement circuit is very important in phase-coded MMW radar system because of the high measurement precision requirement of target speed.
激光相位多普勒(PDA)能够同时测量粒子的速度、大小和相对折射率。
Laser phase Doppler anemometry (PDA) technology can be used to measure moving particle's velocity, size and relative refractive index simultaneously.
讨论了利用GPS多普勒频移观测值确定运动载体速度的基本原理，估计出采用这一方法可以达到的精度。
The basic principle for determining the speed of moving vehicles with GPS Doppler observed values is discussed, and the available accuracy with this method is presented.
脉冲多普勒雷达在信号检测时存在距离模糊和速度模糊的问题。
There exist ambiguities of range and velocity in the signal detection of pulse Doppler radar.
首先，本文概述了一些典型流场、天气系统的PPI多普勒径向速度模式。
First, the characteristics of Doppler velocity PPI for some typical streamline field and synoptic system were summarized.
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.
相对于一般的通信系统而言，低轨卫星通信系统具有信号动态范围大，多普勒频移大且变化速度快，信道起伏剧烈等特点。
LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
使用组织多普勒功能研究胎儿二、三尖瓣环的运动速度来反映心肌功能。
Study the velocity of mitral and tricuspid annulus by tissue Doppler Image to reflect the myocardial function.
探讨了不同弹目交会情况下多普勒效应对无线电引信性能的影响及速度补偿问题。
The influences of Doppler effect on radio fuze performance in different cases of missile-target encounter and velocity compensation were analyzed.
本文介绍一种新的测试方法，利用光栅运动的多普勒效应，实现速度或位移测量的单光栅测量系统。
A new testing method is introduced in the paper, the speed and displacement single grating measuring system has been realized by using Doppler effect of grating moving.
激光多普勒测速技术(LDA)，是一种流体速度的无接触式光学测量方法。
Laser Doppler Anemometry (LDA) is a non-contact optical method for measuring flow velocity.
动态下测量了浑水流动速度和多普勒信号特性。
In dynamic state the velocity of the sediment-laden flow and Doppler signal characteristics are measured.
随后给出了一种以链路距离变化率作为相对速度来计算多普勒频移的新方法。
Then a new method of computing Doppler shift is presented, in which the variation of link length is regarded as the relative velocity between satellite and earth station.
估计最大多普勒频移或者是移动台的速度对于优化接收机的性能至关重要。
Estimation of the maximum Doppler spread or, equivalently, the speed of the mobile, is of an essential importance for the optimization of receiver algorithms.
对流单体受到超折射污染时，零速度线所在区域多普勒通道可采用中等级抑制，监测通道可采用强等级杂波抑制。
The medium level suppression in the Doppler channel and high level suppression in the Surveillance channel can be invoked when convective precipitation cells are contaminated.
本文主要研究了基于激光多普勒效应实现带钢速度检测方法。
This paper makes a tentitve study on the method of belt-material velocity detection based on laser Doppler effect.
目的测算比较正常室壁心肌和梗死心肌的运动速度，评估多普勒组织成像(dti)对冠心病梗死心肌的诊断价值。
Objectives To evaluate the diagnostic value of Doppler tissue imaging (DTI) for detection of infarction myocardium in coronary heart disease.
分析了这两对双多普勒雷达径向速度测量误差引起的风场反演的误差。
The errors of wind derived from the two Doppler radar systems are estimated.
激光多普勒测速以其高精度、使用方便而在速度测试领域得到广泛的应用。
Laser Doppler velocity is widely used in the measurement field of velocity for its high accuracy and easy-used property.
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