这种域间转换的概念在很多领域的学习中都很有用—例如，信号处理领域中从时间域移入频率域。
This notion of inter-domain transformation is useful in many fields of study-for example, moving from the time domain into the frequency domain in the field of signal processing.
这个效应可以在时间域通过观测电压的衰变率来测量，也可以在频率域通过正弦电流和电压之间的相变来测量。
This effect can be measured in either the time domain by observing the rate of decay of voltage or in the frequency domain by measuring phase shifts between sinusoidal currents and voltages.
“调制域”是由信号的频率和时间两个轴构成的平面域。
"Modulation domain" is a plane domain which is consisted of frequency and time signal axes.
调制域及脉冲分析仪利用时间和频率构成的平面域对信号进行分析。
Modulation Domain and Pulse Analyzer(MDPA) analyzes signal using a plane domain which is consisted of frequency and time.
可完成数据的采集、转换，并进行时间域和频率域的多种运算。
The system is capable of sampling, conversion and various calculations in both time and frequency domains.
本文根据原型振动实测的位移记录，应用时间域识别法，求得了结构的前几阶模态的固有频率和阻尼比。
Some modal natural frequencies and damping coefficients of a structure are derived by means of in-sita testing displacement records and the time domain identification technique.
介绍了瞬时频率的概念和瞬态谱的小波包计算方法，并结合时间域模拟信号给出了其时频分布。
The conception of transient frequency and calculation method of wavelet packet are introduced, and time frequency distribution about simulation and actual seismic signals is given.
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。
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.
薄层反射在频率域会出现陷频现象，其陷频周期的倒数等于薄层的时间厚度。
The reflection of thin layer may lead to frequency notch and the reciprocal of notch cycle is equal to the time thickness of thin layer.
已经有许多方法在频率和时间域采用反褶积方法。
Many methods have been proposed to employ deconvolution in frequency as well as in time domain.
对信号和系统进行分析研究可以在时间域，也可以在频率域。
And the signal system can be analyzed in the time domain, can also frequency domain.
首先是工业机器人的时间域和频率域分析。
Firstly, industrial robot was analyzed in the time and frequency domain.
双线性时间-频率变换在时间域与频率域都具有较高的分辨率，有利于复杂背景条件下微弱瞬时信号的探测。
Bilinear time-frequency transform possesses a high resolution both in the time domain and the frequency domain. It can be utilized to detect weak transient signal in complex background.
目的以门诊量资料为例，计算功率谱密度函数，研究时间序列信号的频率域特征。
Objective The power spectral density functions of outpatient flow are calculated in order to study the spectral characteristics of the given time series.
小波变换同时有在时间域和频率域对信号进行局部化的特点，使其在声波信号处理中有着广泛的应用前景。
The wavelet transform is of good localization property in the domain of time and frequency, which provides a comprehensive application in processing acoustic wave.
当在频率-空间域进行计算时，相对于纯粹的时间-空间域有限差分算法有计算效率高、成像方便的优点。
Contrasted with the methods in time space domain, this one has high computation efficiency and is prone to image, because all its computation is in frequency space domain.
小波由一族小波基函数构成，它可以描述信号时间(空间)和频率(尺度)域的局部特性。
By the family of wavelet basis function of wavelet Composition, it can describe the signal time (space) and frequency (scale) domain of the local characteristics.
本文提出一种在频率域内直接估计随机动态系统的连续时间模型参数的快速迭代算法。
In this paper, a direct procedure for estimating the parameters of a continuous-time model of a dynamical stochastic system is presented.
设计了在频率域电法勘探中发送机与接收机GPS时间同步电路，实现了多频激电仪接收机与发送机的精确时间同步进行高精度相位测量。
The frequency domain electric transmitter and receiver synchronization electrocircuit has been designed. It is concluded that the GPS time synchronization is feasible in this instrument.
这种分析方法提供了时间域与频率域的联合分布信息，清楚地为我们描述了信号频率随时间变化的关系。
As one of the best tools to analyze the non-stationary signals, it shows a good picture in the joint time-frequency domain and makes us know about the change of frequency along with the time clearly.
文中还给出了单位阶跃响应和频率响应两种非参数模型，以及时间域和频率域的动态性能指标。
The non-parametric models of the unit-step response and frequency response and the dynamic performance index of both in time domain and in frequency domain are also given in this paper.
根据往复式内燃机工作的本质特征，选择了与传统时间域及频率域不同的曲轴角度域及频率域，对汽车发动机的瞬时转速波动进行了划分。
According to the basic characteristics of internal combustion engines, crank Angle domain and its frequency domain were chosen, and engine momentary speed fluctuations were divided.
把时间域信息和频率域信息联系起来进行分析的方法，称为时频分析法。
The method that relates temporal information to spectral information is called temporal frequency analysis.
设置一固定宽度的时间窗，在某一信号上沿时间轴滑动，窗内观察到的信号段被变换到频率域，并在频率域求相关。
A certain time window with a fixed width is set and moved along the time axis of a signal.
可控源时间域电磁法应用在海底探测，需要确定装置参数，通过实验和理论计算确定了发射频率的最大值；
For a sea-floor transient electromagnetic exploration system, its maximum transmitting frequency may be chosen as 200 Hz by supposing the sea-floor as horizontal thin conductive plates.
在时间域考虑了测量噪声，使得多普勒频率估计的似然概率达到最大。
By maximum likelihood estimation, the likelihood probability of estimating Doppler frequency is maximized.
地震信号在频率域和时间域表现出不同的特征，利用频率域的地震信号，可以更好地进行储层预测。
The features of seismic signals are different between time and frequency domains. We can make reservoir prediction better with seismic signals in frequency domain.
系统可以分析平稳信号和非平稳信号，实现了实时地在时间域、频率域内了解机组运行状态的功能。
Both stationary and non-stationary signals are suitable to be analyzed by the system. The running state of generator set can be real-time observed in both time domain and domain.
从时间域和频率域两个角度对土密实度瞬态振动测试信号进行了分析，提取了信号的特征参量。
The signal of instant vibration testing for soil compactness is analyzed both in time domain and frequency domain. Some feature parameters reflecting the characteristics of the signal are extracted.
从时间域和频率域两个角度对土密实度瞬态振动测试信号进行了分析，提取了信号的特征参量。
The signal of instant vibration testing for soil compactness is analyzed both in time domain and frequency domain. Some feature parameters reflecting the characteristics of the signal are extracted.
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