It is found that the frequency-domain analysis is simple, direct and easy to reveal the essence of the problems.
本文的分析和讨论说明：频域分析法既简单又直观，更容易揭示问题的实质。
The frequency-domain analysis is accomplished by fast-Fourier transform analysis(FFTA)procedures and tested with a computergenerated mathematical model.
频域分析借助于快速富里叶变换分析（FFTA）过程，并用由计算机生成的数学模型进行测试。
The advantage of this method is that it doesn't require locating accurately the end point of QRS wave of HRECG and overcomes low resolution of frequency-domain analysis.
并且克服了时域法要求对QRS 复合波的起点和终点准确定位不易的缺点，以及频域分析法频率分辨率不足的缺陷。
So by means of the frequency-domain analysis, the character of alarming signal can be deduced and used in the system of portable safety alarming system of train approaching.
针对远方列车信号很小，且具有很强的噪声，直接通过时域分析误差较大，因此，采取频域分析方法，获取列车接近时的警报信号的规律，以用于便携式列车接近安全报警系统中。
There is no implicit analysis in a frequency distribution-it is simply the statistical representation of what exists in a particular data element or domain.
在频率分布中没有隐式的分析—它只是关于一个特定数据元素或域的内容的统计表示。
Then the time domain analysis methods and frequency domain analysis methods which are frequently used for fault diagnosis have been discussed.
其次论述了常用的故障诊断方法，即时域分析方法和频域分析方法。
Time frequency analysis method is used to analyze the time domain and frequency domain of seismic waves at the same time according to the principle of wavelet transformation.
时频分析方法是利用小波变换原理，从地震波的时间域和频率域同时对其作出分析。
The main analytical method of unsteady flow in pipelines includes frequency domain analysis and time domain analysis.
管道中非稳定流动的分析方法主要有频域法和时域法。
Methods of analyzing the dynamic performance of automatic control system can include time domain analysis, frequency domain analysis and stability.
自动控制系统的动态性能的分析方法包括时域分析法，频域分析法，及稳定性判据。
A method based on complex frequency domain analysis is presented for the simplification of the partial differential model of non compressible fluid transportation process.
通过复频域分析，从理论上提出了一种建立输送管内不可压缩流体动态传送简化模型的方法。
It is shown that important information about human response can be obtained from a frequency domain analysis.
研究表明通过频率域分析可以得到有关人体响应的重要信息。
Based on modulation domain analysis, a frequency modulation parameter testing method is proposed.
基于调制域分析，设计了电子产品频率调制参数测试方法。
This article analyzes the plant electrical signal in time domain and frequency domain by using the statistical analysis method.
应用统计分析方法对植物电波信号进行了时域和频域上的分析。
Design mainly SSB signals have had time and frequency domain analysis.
设计中主要是对SSB已调信号进行时域和频域分析。
Full spectrum analysis is emphasized in frequency domain analysis.
在频域方面，重点介绍了全谱分析方法。
Convolution is a key technique in signal and system analysis, which plays an important role in LTI time and frequency domain analysis.
卷积技术是信号与系统分析的核心技术。它在LTI时域和频域系统分析中起着重要作用。
The approximate frequency domain analysis of the proposed controller is presented, which served as a guide for the controller' s parameters selection.
就提出的控制器介绍了近似频域分析法，作为控制器参数选择的指南。
This paper indicates the normal testing methods of time domain frequency stability, and focal points out the testing methods of time domain frequency stability with modulation domain analysis.
介绍了时域频率稳定性常用的测量方法，并重点介绍了利用调制域分析仪实现时域频率稳定性的测量方法。
A new model for frequency - domain analysis - the real resistive model which is based on Complex Network Theory is proposed in this paper.
本文应用复数网络理论，提出了一种用于频域分析的新模型—实阻性模型。
In this paper, the reducer in the main drive system of the rolling mill has been diagnosed successfully by using vibration intensity method and frequency domain analysis method.
利用振动烈度和频域分析方法，对轧机主传动系统减速机进行了故障诊断。
Relative accuracy of regional gravimetric geoid determination is estimated by an frequency domain analysis, which is determined by regional terrestrial gravity measurements and geopotential model.
以频域解析方法，研究由地面重力数据、全球位模型确定区域重力大地水准面的相对精度估计。
A fault diagnosis method based on frequency-domain kernel analysis in nonlinear circuit and neural network is presented.
提出一种基于非线性电路频域核分析和神经网络的故障诊断方法。
As for the periodicity of pulse tracing signals, frequency domain analysis has been used to investigate pulse tracing graph and found the significantly difference between sick and normal persons.
鉴于脉象信号的周期特性，人们将频域分析法应用在脉图的研究上，利用脉谱图分析出了病人与正常人之间存在的显著差异。
The program, which is coded in c, puts time and frequency domain analysis, graph display and plotting together into one integral unit, capable of analyzing and studying any kinds of partial response.
该程序用C语言编程，将时域一频域分析、绘图、打印结合为一体，可对各种类型的部分响应进行分析研究。
The effects of track stiffness on track dynamic characteristics were investigated by the wheel-rail system dynamic analysis in frequency domain.
应用轮轨系统动力学的频域分析方法，研究了轨道刚度对轨道动力特性的影响规律。
The relation between ratio of peaks and degree of defect is worked out, then a method of quantity analysis in frequency domain is proposed.
根据这一特征，得到小峰与大峰之比与缺陷程度之间的关系曲线，提出利用导纳曲线进行缺陷量化分析。
The relation between ratio of peaks and degree of defect is worked out, then a method of quantity analysis in frequency domain is proposed.
根据这一特征，得到小峰与大峰之比与缺陷程度之间的关系曲线，提出利用导纳曲线进行缺陷量化分析。
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