查询词典 Doppler shift

Results Artery wall,vessel lumina and flow can be displayed by color Doppler flow imaging directly.Hemodynamics change can be displayed by spectrum Doppler.

结果 彩色多普勒血流显像可以直观地显示动脉管壁情况、管腔回声及血流充盈情况，频谱多普勒可以显示血流动力学改变。

Method］ Trace back and analyse clinically diagnosed early pregnancy 60 cases,test uterus pregnant vesica echo with vagina ultrasonic wave,compare the observation to color Doppler blood flow raster display and color Doppler energy.

方法］回顾性分析经临床诊断早孕60例，经阴道超声检查宫腔内见似孕囊样回声，应用彩色多普勒血流显像和彩色多普勒能量图对比观察。

Trace hack and analyse clinically diagnosed early pregnancy 60 eases, test uterus pregnant vesica echo with vagina ultrasonic wave, compare the observation to color Doppler blood flow raster display and color Doppler energy.

方法］回顾性分析经临床诊断早孕60例，经阴道超声检查宫腔内见似孕囊样回声，应用彩色多普勒血流显像和彩色多普勒能量图对比观察。

Abstract］ Objective To discuss the value of transvaginal color Doppler ultrasound in diagnosis of endometrial disease.Methods Transvaginal color Doppler ultrasounds were performed in 280 patients endometria.The sonograms were compared with the results of dilatation and curettage and pathology.

摘要］ 目的探讨经阴道彩色多普勒超声对子宫内膜病的诊断价值方法对280例患者的子宫内膜进行经阴道彩色多普勒超声检测，并与诊断性刮宫、手术病理结果对照。

A GPS Doppler model was constructed by using geometric scalar analytic approach, considering the fact that observer is not necessarily on the ground trace of the satellite. In addition to the modeling and computation of orbital angular velocity, visible window of satellite, and the maximum elevation earth-centered angle, Doppler's characterization with regard to the observing time was deduced and analyzed.

采用几何标量分析方法，建立了地心地固坐标系中GPS信号多普勒频移分析模型，计算了卫星可见地心角、卫星轨道角速度和卫星可见区间，推导并分析了多普勒频移关于接收机最大可见仰角、卫星轨道角速度和卫星可见时刻开始所经历的时间等参数的变化规律。

Furthermore, we detailed discuss how the size of the atom bunch and Raman laser pulse, together with Doppler frequency shift affect the precision of the measurement of gravity acceleration.

本论文从薛定谔方程出发，研究了拉曼脉冲激光与冷原子系统的相互作用，得出了作用后的密度矩阵方程。

The simulation shows that STFMPC signal is sensitive to Doppler frequency-shift,and its ambiguity function has one aiguille at the origin and four symmetrical right-angle set-squares with the aiguille as their common spindle.

通过计算机仿真，结果表明该信号是多普勒敏感信号，其模糊函数为在原点的1个尖峰和4个以尖峰为公共轴的有一定厚度的对称直角三角板。

Experimental results show that the method can accurately detect carrier Doppler frequency shift.

结果表明，相位测量方法能精确地测出载波多普勒频移且速度更快，完全能满足后续跟踪环的要求。

In the condition of long pseudo code and large carrier Doppler frequency shift, the number of FFT points in the conventional synchronous acquisition algorithm is too large, the complex multiplication is of high computational complexity and large time cost, and the parameter evaluation acquired in a long duration is not applicable for carrier tracking because it is too old.

当伪码较长、载波多普勒频移较大时，传统的同步捕获算法进行的FIT点数较多，复数来加运算量大，耗时长，而在校长的捕获时间内，捕获得到的参数估计过于陈旧，无法应用于载波跟踪，为此，文中提出了一种改进的快速同步方法。

Laser Doppler Velocimeter:the two times Dopper effect for the scattered light from the tracing particle, the formula of LDV, laser heterodynes measurement, dual beam differential mode, LDV signal processing, frequency shift technique and application, multi-dimension velocity measurement, LDV application while light is refracted.

三。 激光多普勒测速：运动粒子中散射光的二次多普勒效应（1），LDV基本公式(1)，光外差检测技术及其实现(1)，双光束差动模式(1)，LDV信号处理(3)，频移技术及其应用(5)，多维速度的测量(5)，有折射现象时LDV的应用(3)，LDV测量实例(1)。 LDV实验一：LDV光路实验（3） LDV实验二：LDV测水流场实验（3）四。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"