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- ultrasonic Doppler velocimetry 超声多普勒速度计
- Ultralow Speed Measurement by Laser Doppler Velocimetry[J]. 引用该论文 郭继华;徐正奇;殷纯永.
- Analysis of Wavelet Scalogram of Blood Flow Ultrasonic Doppler Signal. 小波尺度图分析法及其在超声血流多普勒信号中的应用。
- The myocardial blood flow (MBF) was determined by ultrasonic doppler. 超声多普勒方法测定心肌血流量;
- Title: Analysis of Wavelet Scalogram of Blood Flow Ultrasonic Doppler Signal. 关键词:小波变换;付里叶变换;多普勒信号;血流;频谱分析
- The turbulence properties of annular space in a cyclone were investigated by using the Laser Doppler Velocimetry. 摘要采用激光多普勒测速系统测试了蜗壳式旋风分离器内的流场,分析了环形空间内的湍流特性。
- The technique of using a conical scanning manner known as velocity azimuth display based on single laser Doppler velocimetry (LDV) system is described. 由这些测得的矢量可反演大气风场群速的速度矢量。
- Three-dimensional turbulent flow of the endwall region inside a centrifugal compressor impeller was studied using a Laser Doppler Velocimetry. 用三维激光多普勒测速系统测量研究了一个离心压气机转子近端壁区三维紊流流场。
- Methods fetal non-stress test combined with fetal umbilical artery doppler velocimetry were used in 200 late pregnant women. 方法联合应用胎心无负荷试验(NST)及多普勒脐动脉血流速度测定对200例妊娠晚期孕妇进行观察。
- Abstract: Three-dimensional turbulent flow of the endwall region inside a centrifugal compressor impeller was studied using a Laser Doppler Velocimetry. 文摘:用三维激光多普勒测速系统测量研究了一个离心压气机转子近端壁区三维紊流流场。
- The average vein diameter of DDVI was greater than DVI by ultrasonic Doppler( P <0 01). DDVI组平均静脉管径显著大于DVI组 ;P <0 0 1;
- With the use of microcomputer with ultrasonic Doppler instrument 203 times of STI were automeasured. 应用微机自动测量STI超声多普勒仪对203人次进行测试。
- This paper introduces the principle and implementation of fetal monitor based on DSP and ultrasonic Doppler theory. 文中介绍基于DSP的超声多普勒胎儿监护仪的工作原理及实现方法。
- The average vein diameter of DDVI was greater than DVI by ultrasonic doppler(P<0.01). DDVI组平均静脉管径显著大于DVI组,P<0.01;
- Color ultrasonic Doppler, CT and selective angiography are very important for the early diagnosis of the disease. 彩色超声、CT、选择性血管造影对该病早期诊断具有重要意义。
- The performances of 3D Laser Doppler Velocimetry(LDV) and Adaptive Phase Doppler(Velocimetry)(APV) were introduced,and the structure and work principle of air-water humidifying nozzle were analyzed. 介绍了三维激光多普勒测速计和自适性相位多普勒速度计系统(三维LDV/APV系统)的性能,分析了气水雾化加湿喷嘴的结构和工作原理。
- This method has been successfully used in the CDL-82 Ultrasonic Doppler Velocimeter. The method can also be used to process other instant cycle signals with small change. 本方法已成功用于CDL-82型超声多普勒流速仪中,略加修改也可用于其它瞬时周期信号的处理。
- Methods This paper retrospectively analyzes 23 cases of ultrasonic characteristics of Budd-Chiari Syndrome,operated with colorful ultrasonic Doppler diagnosis technique. 方法回顾性分析23例由彩色多普勒超声诊断的并经下腔静脉造影或手术证实的布加氏综合征患者的超声图像特征。
- By use of 3-D ultrasonic doppler velocimeter,the turbulence characteristics of water flow in the spur dike head and backflow region are observed and analyzed systematically. 利用三维超声学多普勒流速仪对丁坝坝头附近水流和回流区水流的紊动特性进行了系统的观测和分析,得到了丁坝坝头和回流区的水流特性及紊动动能的分布规律。
- Aiming at the deficiency of existing Doppler effect demonstration instrument, the wiggling-type ultrasonic Doppler effect experiment instrument is designed. 摘要针对现有的声多普勒效应实验装置中存在的问题,设计并制作了摆动式声多普勒效应实验仪。