孤立 性 房颤组只有二尖瓣环组织多普勒运动曲线上的参数与对照组差异有统计学意义（P<0.05）。
There was obvious difference between the patients with so-called lone AF and the normal group only in the tissue Doppler parameters of mitral ring(P<0.05).
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。
With modern spectral estimation algorithm, spectrum analysis on Doppler frequency caused by vehicles radar movement is carried out in DSP chip.
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.
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.
目的探讨不同扫查角度对彩色组织多普勒显像观察左室壁舒缩运动中心的影响。
Objective To determine the center of left ventricular(LV) segmental wall motion using color tissue Doppler imaging at various scanning angles.
本文分析了电离层的变化和运动引起多普勒频移的物理机制，假定了一个包含多种因素的电离层模型。
The mechanism of Doppler frequency shifts resulted from variations and movement of ionosphere is analysed, and a general model for the ionosphere involving several factors is assumed.
海面低速目标的非均匀运动和射频瞬态干扰引起的多普勒谱展宽影响高频地波雷达检测目标的准确性。
The Doppler spectral broadening due to nonstationary movement of target and radio-frequency clutter will decrease the veracity of target detection by high frequency ground wave (HFGW) radar.
目的应用脉冲多普勒组织成像（PW DTI）分析正常右室心肌舒缩运动的特点。
Objective To investigate the characteristics of right ventricular wall motion by the pulsed wave Doppler tissue imaging (PW-DTI).
由于天基雷达的运动和地球自转，地球上每一点的杂波都产生了附加的多普勒成分——距离游走效应。
The radars motion and earth rotation generate a Doppler frequency component in the clutter return form any point on the earth-range walking.
利用洛伦兹变换导出了相对论性的多普勒颇移的普遍公式，并且讨论了波源的超音速运动情况。
A general formula of relativistic Doppler shift is obtained from Lorentz transformation, and the supersonic motion is discussed as well.
利用自制装置演示了声源作圆周运动的多普勒效应，并应用图谱分析软件得到频率分布图。
Doppler effect can be demonstrated by manufactured device when the sound source is in circular motion. The frequency spectrum is gained with chart spectrum analysis software.
建立了用来检测微机电系统谐振器面内运动的激光差动多普勒系统，测量了谐振器的振动速度。
A differential laser Doppler system is built to measure the in-plane movement of micro-electro-mechanical systems (MEMS), and the vibration of a MEMS resonator has been measured.
目的：探讨多普勒组织成像（DTI）检测冠心病局部室壁运动异常的临床应用价值。
Objective:To explore the clinical value of Doppler tissue imaging (DTI) in detection of regional wall movement abnormalities (RWMA) in patients with coronary artery disease (CAD).
文中提出一种在虚拟听觉空间中加入多普勒效应以提高模拟运动物体效果的方法。
This paper presents a novel approach to improve the fidelity of simulating the moving objects in virtual auditory space by adding Doppler effects.
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.
该方法通过对原始声源运动轨迹的分析，对声源信号进行多普勒调频，并根据耳间时间差对双耳信号进行调相。
The sound signal is Doppler FM modulated based on the analysis of the moving track of the original source, and then phase modulated according to the interaural time difference.
在水声通信中，由于发射和接收平台之间的相对运动，多普勒频移是无法避免的。
Doppler shift is unavoidable in underwater acoustic communications because of relative moving between the transmitter and the receiver.
我们对完成了运动补偿的等效转台数据进行了FFT—距离多普勒成像和超分辨成像。
The image-formation of the motion compensated data is carried out by FFT range-Doppler processing and superresolution processing respectively.
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.
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.
另外，运动物体的速度感通常是因为环境中多普勒效应的存在而被感知。
The sense of speeding motion is usually perceived by the presence of a Doppler Effect. Reduction of Barry Truax - Handbook for Acoustic Ecology CD-ROM Edition.
运动状态下的同步技术是通信领域克服多普勒频移的关键技术，直接影响通信系统的性能。
In movement state, the technology of synchronization is the key of overcoming Doppler frequency shift in the communication, and the performance of communication has influenced.
雷达测速仪是利用多普勒测速原理，获得运动目标的频率偏移信号。
Police traffic radar USES the theory of Doppler speed detection to measure the offset of the frequency.
在多普勒调频斜率估计中，时频分析法比较直观，估计精度也不错，脱机处理中获得了广泛的应用，图像偏移法估计速度快，在运动补偿中得到了应用。
Image offset method that is also fast can be applied to motion compensation, time-frequency method is intuitionistic and have a better accurate, which is applied extensively on offline.
在GPS接收机中，目前研究的重点是高动态环境下的接收机，其关键是解决载体高速运动给GPS接收机附加的多普勒频移问题。
About GPS receiver, the research importance is high-dynamic receiver. The key is to solve the Doppler frequency shift caused by the high-speed movement of carrier.
目的运用多普勒组织成像(dti)观测比较正常室壁心肌和梗死缺血心肌的运动变化，评估dti对冠心病心肌梗死的诊断价值。
Objective To evaluate the diagnostic value of Doppler tissue imaging (DTI) for detection of infarction myocardium in coronary heart disease.
脉冲多普勒雷达是利用目标与雷达之间相对运动产生的多普勒效应实现测速功能的一种新型雷达。
Pulse Doppler radar is a new type of radar which uses the Doppler effect due to the relative movement between the object and the radar to measure the velocity of the object.
激光多普勒测速雷达技术利用激光多普勒效应测量固体目标的运动速度，或者流场速度分布。
Velocity of solid targets and velocity distribution of flowing fields can be measured by Laser Doppler Velocimeter (LDV) technology based on Doppler Effect.
利用相位编码信号探测高速运动目标时，存在多普勒频率敏感性问题，需要对多普勒频率进行补偿。
When detecting the high-speed moving target by using phase-coded signals, Doppler frequency compensation is necessary because of the Doppler frequency sensitivity of phase-coded signals.
目的探讨多普勒组织成像技术(dti)定量分析多巴酚丁胺超声负荷试验(dse)过程中缺血心肌室壁运动的特征。
Objective to quantitatively define the ischemic myocardium response to dobutamine stress echocardiography (DSE) in coronary artery disease (CAD) patients by Doppler tissue imaging (DTI).
应用推荐