频谱测量

水饱和试样声衰减的频谱测量

Spectral Measurements of Ultrasonic Attenuation in Water - Saturated Samples

光探测磁共振波谱仪基于不同pH值的磁共振频谱测量和磁共振T2加权成像

Investigation of Magnetic Resonance Spectroscopy and T_2-weighted Magnetic Resonance Imaging Based on the Different pH Values

这为1H磁共振频谱测量pH值提供了更可靠的依据。

This provides a more reliable basis for the measurement of pH values by 1H magnetic resonance spectroscopy .

利用PSpice进行频谱测量和分析

Measure and Analyse Frequencies Use Pspice software

应用多普勒超声频谱测量二尖瓣血流的流速时间积分（VTI）。

The velocity-time integral ( VTI ) of mitral inflow was measured with Doppler ultrasonic spectrum .

在组织阻抗频谱测量研究中，作者提出了一种等角测量频率分布法，使测量频率点在Nyquist轨迹图中呈等角度分布。

In the research of tissue impedance spectroscopy measure me nt , the authors constructed a frequency sets that produce angularly equidistant points on the Nyquist loci .

生物组织阻抗频谱测量技术及特性的基础研究

Studies on Impedance Spectroscopy Measurement Methods and Characteristic of Biological Tissues

基于单片机的生物电阻抗频谱测量系统

Bioelectrical Impedance Frequency Spectrum Measurement System Based on Single Chip Computer

基于光纤干涉仪的振动频谱测量技术研究

Research on Vibration Frequency Spectrum Measurement Based on Optical Fiber Interferometer

一种利用傅立叶频谱测量透镜焦距的新方法

A New Method to test Focal Length Using Fourier Spectrum

生物组织复电阻抗频谱测量及电阻抗断层成像系统的研究

Bio-impedance spectra measurement and systematic research on electrical impedance tomography

用傅里叶频谱测量焦距的调整误差分析

The adjusting error analysis of the focal length measurement using Fourier spectrum

为了管理阻抗频谱测量数据，作者初步设计了相应的数据库基本框架。

The author uses the database technique to manage the impedance spectroscopy data .

自由电子激光辐射频谱测量

Radiation spectrum measurements in the free electron lasers

组织阻抗频谱测量中杂散电容对测量精度影响的研究

Research of effect of stray capacitance on measurement accuracy in tissue impedance spectroscopy measurement

频谱测量中假响应的识别

The Recognition of Spurious-Response in Spectrum Measurement

高频返回散射回波频谱测量

Measurements of the HF Backscatter Echo Spectra

4～8级大风的次声波三维动态频谱测量研究

Measurement of three-dimensional dynamic frequency spectra of infrasonic waves produced by winds with 4-8 wind scales

闪电辐射场的宽带频谱测量及地闪首次回击放电参数的估算

The measurements of amplitude spectral distribution of lightning radiation field and the estimation of first return stroke parameters

系统主界面测量功能包括频谱测量、谐波分析和功率测量三个模块。

The measurement functions of the main interface in the system include three modules & spectrum measurements , harmonics analysis and power measurements .

将压缩感知理论应用于频谱测量过程中，不但可以降低采样速率、提高频谱测量精确度，而且能够简化采样器结构，利于实际应用。

Applying CS to the spectral measurement process can not only reduce sampled rate , increase spectrum measurement accuracy , but also simplify the sampling structure .

另外在加速器物理实验以及在研究各种束流不稳定性的机器研究过程中，都需要频谱测量和频谱分析。

In addition , it required to measure and analyze the beam spectrum while the experiments of accelerator physics and study on the beam instability are made .

接地电极阻抗的虚、实分量测量仪是根据频谱测量技术设计的一种包括信号发射、数据采集、处理及显示的智能型检测系统。

Impedance testing of grounding electrode is an intelligentized testing system , based on measurement of frequency chart , including signal transmitting , data acquisition and processing and displaying etc.

然后，基于频谱测量数据分析的结果，利用真实的无线频谱在频率维存在着较高的相关性这一结论，提出了频率维预测的思想。

Then according to the analytical results from the spectrum measurement data , the notion of spectral prediction is proposed by leveraging the conclusion that there exists high spectral correlation among real wireless spectrum .

该恒流源在便携式生物阻抗频谱测量仪的实际应用表明：新型恒流源具有更好的频谱纯度和幅值稳定度，更高的输出阻抗和电压柔量，更低的功耗。

The application of the SSCS in a portable bioimpedance spectrometer proves that the new SSCS can provide better frequency purity and magnitude stability , higher output impedance and voltage compliance , and lower power consumption .

流场可视化观测是本课题研究的重要基础，本章对微距模式下的高速摄像技术进行了重点介绍，同时结合频谱测量方案介绍了实验系统的搭建过程。

Based on this , the scheme of the study method is summarized . The technology of high speed observation , which is the key basis for the research , combined with the spectrum measurement system is introduced .

本文采用流场仿真、高速观测和频谱测量等方法从流场的微观角度对液压阀口的流道结构、压力梯度、流场流态和空化特性之间的关系进行了系统研究。

In this paper , the flow simulation , high-speed observation and spectrum measurement methods are adopted to investigate the relationship of valve port structure , pressure gradient , flow pattern and cavitation characteristic from the microscopic point of view .

启动彩色多普勒和频谱多普勒测量卵巢髓质的PI、RI值，所有数据均测量三次取其平均值，所有病例经确诊后分组进行比较。

PI and RI of ovarian medulla were analysed with color Doppler and Doppler spectral imaging .

频谱多普勒测量肿瘤血管的血流动力学参数PSV、PI和RI并进行自身对照。

And hemodynamic parameters of tumor arteries such as PSV , PI and RI were measured using Doppler ultrasound with spectral analysis and compared with themselves .

目的观察动脉粥样硬化模型兔腹主动脉多普勒血流频谱，测量其血管内膜-中层厚度（IMT），探讨二者与动脉粥样硬化的相关性。

Objective To assess the correlation of intima media thickness ( IMT ) in two dimension ultrasound and hemodynamic parameters of Doppler with arteriosclerosis .