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时间域分析
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  analysis of time domain
     The analysis of time domain of the series indicates that the sampling values appear to be in a right-deviated normal distribution, which is in accordance with the results derived from the ice cores of Qing-Zang (Tibet) Plateau.
     该序列的时间域分析结果表明,其采样点值为右偏正态分布,这一特征与青藏高原等地的冰芯分布特征相一致。
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  “时间域分析”译为未确定词的双语例句
     The instrument has many functions, such as time domainanalysis (time waveform, auto-correlation, cross-correlation, orbit), amplitude domainanalysis (histogram, probability, probability density, skewness, kurtosis), and frequencydomain analysis (frequency response function, FFT spectrum, linear spectrum, autopower spectrum, cross-power spectrum, cepstrum).
     仪器具有时间域分析(时间波形、自相关、互相关、轴心轨迹)、幅值域分析(直方图、概率分布、概率密度、偏度、峭度)、频率域分析(频率响应函数、FFT谱、线性谱、自功率谱、互功能谱、倒频谱)等功能。
短句来源
     This paper applied three joint time frequency analysis (JTFA) methods to a surface discharge signal in oil, i.e., Short time Fourier transformation (STFT) based spectrogram, Wigner distribution (DWD) and Gabor spectrogram (DGS).
     将短时傅立叶变换谱、Wigner分布及 Gabor谱等 3种联合时频分析方法应用于离散时间域 ,分析并处理了油中沿面放电波形。
短句来源
     Recording this time dependent speckle pattern the surface deformation of the object can be obtained.
     连续采集这一时变散斑场 ,并通过时间域分析 ,即可获得被测物体表面所对应的时变位移场 .
短句来源
     Based on the characteristics of the observed data of volume strain tides, a timedomain mathematical model is proposed to process the observed data of volume strain tides.
     根据体应变观测资料的特点,研究了体应变观测资料的处理方法,提出了在时间域分析的数学模型。
短句来源
     Formula of quantitative calculation of time domain a-nalysis are derived ,and selection method for some key parameters is introduced.
     推导了时间域分析定量计算的公式,并给出了一些关键参数的选择方法。
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  相似匹配句对
     TIME DOMAIN ELECTRON SPIN RESONANCE
     时间电子自旋共振
短句来源
     the working time analysis;
     作业时间分析;
短句来源
     Analysis of Survival Time
     生存时间分析
短句来源
     Analysis of PSS Time Constants Using the Method of Frequency Domain
     PSS时间常数的频分析
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     Spectral Analysis of Pulse Transit Time Variability
     脉搏波传导时间变异性的频分析
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  time domain analysis
Time domain analysis of transient propagation in inhomogeneous magnetized plasma using Z-transforms
      
The nonlinear differential equation of internal pressure dynamics and iteration algorithm were applied to calculate fluctuating internal pressure and time domain analysis was used to verify the accuracy of the proposed method.
      
The time domain analysis leads to hyperbolic partial differential equations and an inverse method based on solving implicit equations.
      
In the time domain analysis, a linear modal superposition approach is used to compute the peak response values.
      
Time domain analysis of a charged particle travelling along the axis of a circular waveguide
      
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In this paper a time-domain simulation method for computing the motion of a rigid body floating on water free surface is presented. The total velocity potential generated by the motion of the body is divided into two parts. One is the impulsive velocity potential which is obtained by Hess-Smith method. The other is free surface potential. By the means of the representation of the free-surface potential suggested in this paper and the relation between the impulsive velocity potential and the free surface potential,...

In this paper a time-domain simulation method for computing the motion of a rigid body floating on water free surface is presented. The total velocity potential generated by the motion of the body is divided into two parts. One is the impulsive velocity potential which is obtained by Hess-Smith method. The other is free surface potential. By the means of the representation of the free-surface potential suggested in this paper and the relation between the impulsive velocity potential and the free surface potential, the Fourier transform motion is used to obtain the initial value of free surface potential. And then the boundary condition on body surface is used to calculate free surface potential at each time-step. As an example the added mass and its memory function on a hemisphere are computed. The variation of free-surface shape at each time-step after impulsive motion are computed. At the end of this paper, the Cummins' equation of motion in time-domain is used to solve the motion in vertical direction of a hemisphere floating freely on free surface.

本文提供了—种浮体运动的时间域分析方法。由物体运动引起的流体运动的总的速度势分为脉冲势和自由表面速度势两部分;脉冲速度势采用类似于Hess-smith方法求解,自由表面速度势根据脉冲速度势和自由表面速度势之间的关系,利用傅立叶变换获得其初值,然后按时间展开,在每个时间步长上满足物面条件得到在所考虑的时间域上的自由表面速度势。作为算例,本文计算了球体的附加质量系数、迟滞函数,最后利用Cummins时间域上的运动方程求解了一个自由浮漂半球在得一位移脉冲之后的升沉运动。

Abstract

目前,我国在桩基质量无损检测中使用的仪器主要是时间域的,因此其成果的解释也以时间域分析方法为主。但是频率域的分析较为直观,有其独特之处。本文通过介绍桩基激振响应的波动方程在频率域中的解,对桩基质量在频率域中的分析方法作粗略的探讨。

In this paper, an analytical method in time-domain was used. Based on the behaviour of two longitudinal oscillations that occured on JJ-7,a mathematical mode of pilot-vehicle closed-loop analytical system was proposed and a great deal of digital simulations was made in order to replicate the dynamic process of two oscillations. It was investigated that pilots how controled the aircraft and the aircraft was how responsive to the controls in the oscillation process. At last, this paper has indicated that the nature...

In this paper, an analytical method in time-domain was used. Based on the behaviour of two longitudinal oscillations that occured on JJ-7,a mathematical mode of pilot-vehicle closed-loop analytical system was proposed and a great deal of digital simulations was made in order to replicate the dynamic process of two oscillations. It was investigated that pilots how controled the aircraft and the aircraft was how responsive to the controls in the oscillation process. At last, this paper has indicated that the nature of those oscillations and the factors of occuring the oscillations can judge clearly and accurately. It also has indicated possibility that PIO can occur in those flying coditions.

本文利用时间域分析方法,根据JJ-7飞机两次纵向振荡的特点,提出人-机闭环分析的数学模型,进行数值仿真计算,复现两次振荡的动态过程。考察振荡过程中,驾驶员是如何操纵飞机和飞机是如何响应的,从而进一步清晰而准确地判断两次振荡的性质和原因,产生PIO的条件和可能。

 
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