Meanwhile, it was good practice on the method by using color doppler system to observe the function of the drugs.
同时，本文在彩色多普勒观察药物作用的方法上进行了有益的实践。
Objective To design a digital multigated PW ultrasound Doppler system and validate the system in experimental study.
目的设计一套数字化脉冲波超声多普勒系统，以实现多深度血流频谱分析和显示。
Methods Computerized ultrasonic doppler system was used to study the four-chamber view of 137 fetal hearts from 10 to 17 weeks of gestation.
方法应用彩色多谱勒超声检测137例孕10至17周的正常胎儿心脏四腔结构。
Methods The changes of portal hemodynamics were measured by using ultrasonic Doppler system in 18 patients with CHB before and after treatment with self LAK cell infusion.
方法应用超声多普勒系统测量18例经自体LAK细胞回输治疗的慢乙肝患者治疗前后门静脉血流动力学参数。
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.
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。
Changes of portal venous hemodynamics after transcatheter hepatic artery embolization (TAE) were studied in 23 hepatocellular carcinoma (HCC) patients using the color Doppler system.
本文应用彩色多普勒对23例原发性肝细胞癌(HCC)患者肝动脉栓塞术(TAE)前后门静脉的血流动力学变化进行了研究。
If you have a binary system whereby both stars are visible so you get the spectrum of both stars, then you see the Doppler shift of both stars in the spectrum.
若存在一个双星系统，两颗恒星均看不见，你能得到双星的光谱，然后在光谱中看到，双星的多普勒顿移。
Laser Doppler Perfusion Imager system (LDPI) is a uptodate medical diagnoses production at the end of last century.
激光多普勒图象诊断系统(LDPI)是上世纪末医学诊断仪器的最新成果之一。
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.
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。
In the satellite navigation and positioning system, Doppler shift is one of the key problems that may degrade the performance of the satellite receiver.
在卫星导航定位系统中，多普勒频率偏移是影响接收机性能的关键因素之一。
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.
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。
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.
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。
A pulse Doppler radar seeker simulation system is established, by using the simulation system the performance of pulse Doppler radar seeker is evaluated when jammed.
本文建立了脉冲多普勒雷达导引头仿真系统，利用该仿真系统评估了分别在压制式干扰和欺骗式干扰条件下导引头的抗干扰能力。
A new type of rotation body profile measuring system utilizing laser Doppler effect was proposed.
提出一种基于激光多普勒效应的回转体表面轮廓测量系统。
First, the characteristics of Doppler velocity PPI for some typical streamline field and synoptic system were summarized.
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。
The ways of estimating the frequency offset and Doppler spread width in WCDMA system are studied in this paper.
本文主要研究了WCDMA(宽带码分多址)系统中频偏和最大多普勒频偏的估计方法。
With the Doppler laser vibration measurement system, the vibration velocity curves of the flip chip and tool tip were obtained during thermo-sonic flip chip bonding.
采用多普勒激光振动测量系统，获得了热超声倒装键合过程中工具末端及芯片的振动速度曲线。
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.
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。
The most successful part of the system is the selection of SL ultrasonic Doppler side-looking flowmeter and developed software.
其中选用的SL超声波多普勒侧视流量仪和开发的应用软件是本系统最为成功之处。
In the system of radar, Doppler frequency is very sensitive to the coding signal.
雷达系统中，相位编码信号对多普勒频率非常敏感。
And the revising methods were also adapted to precise laser Doppler scanning measurement system.
同时，此误差校正方法同样适合高精度激光多普勒扫描测量系统。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
在复合系统通信中，飞行器的高动态使扩频信号存在多普勒频移。
Objective To assess the accuracy of Doppler audio-signal processing system(DASPS) in noninvasive automatic estimation of pulmonary vascular resistance (PVR).
目的评价多普勒超声音频处理系统（DASPS）自动定量估测肺血管阻力（PVR ）的准确性。
Moreover, simple pulse Doppler radar altimeter system can't satisfy the demands for anti-jamming in complex electromagnetic environment.
除此之外，简单脉冲多普勒体制高度表也很难满足现代复杂电磁环境下抗干扰能力的要求。
Objective To observe the fetal blood flow changes in the liver portal vein system by color ultrasound Doppler.
目的应用多普勒超声监测胎儿时期肝内门脉系统的血流参数。
When there is faint Doppler echo in noise, the system output is intermittent chaotic, and the Doppler shift can be obtained accurately by calculating the interval of chaotic state.
当噪声中含有微弱的多普勒回波时，通过理论分析可知系统输出为阵发混沌状态，且可根据混沌状态的间隔周期较准确地求出回波信号的多普勒频移。
This paper presents a system simulation method of pulse Doppler radar altimeters with frequency agility.
本文提出了雷达高度计的一种系统模拟方法。
In this paper, on the basis of the basic principles and practical engineering, the Doppler lidar system for microscale wind shear-field detection is studied.
本文从基本原理和工程实际出发，对用于微尺度风切变场探测的多普勒激光雷达系统进行了初步研究。
In this paper, on the basis of the basic principles and practical engineering, the Doppler lidar system for microscale wind shear-field detection is studied.
本文从基本原理和工程实际出发，对用于微尺度风切变场探测的多普勒激光雷达系统进行了初步研究。
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