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  truncation
    New Type of Numerical Truncation Boundary Condition for Simulating Open Region Electromagnetic Field Problems
    模拟开放系统中电磁场问题的一种新型数值截断边界条件
短句来源
    Fast Fourier Transform (FFT) is inevitable to cause the spectrum leakage and fence effect because of truncation and discreteness in signal collection.
    采用快速傅立叶变换(FFT)进行电力系统谐波分析时,需要对采样信号截断并离散化,从而导致频谱泄漏和栅栏效应。
短句来源
    A self adaptive truncation technology is presented to transform the generalized Sommerfeld integral which has an infinite upper limit into a definite integral.
    对相应的无穷上限广义 Somm erfeld积分的计算 ,提出了自适应截断技术 ,将无穷上限积分转化为普通定积分 ,同时 ,积分上限可根据规定的误差限自动选取。
短句来源
    The Truncation Error in The Simultaneous Sampling Measurement of Nonsinusoidal Electrical Power and Its Pesearch
    同步取样法测试非正弦交流电功率的截断误差及其研究
短句来源
    There are difficulties in performing synch-ronized sampling and integral period truncation in the harmonic analysis of power system with the fast Fourier transform (FFT) technique. However, not to satisfy these conditions, the results will be disturbed by the frequency-leakage.
    采用快速傅立叶变换(FFT)进行电力系统谐波分析时很难做到同步采样和整数周期截断,由此造成的频谱泄漏将影响到谐波分析的结果。
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  “截断”译为未确定词的双语例句
    Study on the Measurement Method of the Chopping Instant of Lightning Impulse
    雷电冲击截波截断瞬间确定方法研究
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    This paper presents the mathematical model of the control system-transfer matrix which has the double input, double output and the double closed loop according to the characteristics of energy loop in electric energy feedback system.
    本文根据电能封闭传动中能量封闭环的特点,选取适当点“截断”能量环取出输入与输出参数,推导出具有双输入双输出双闭环控制的电能封闭传动控制系统的数学模型—传递矩阵。
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    A current-controlled model of semiconductor opening switch(SOS) was developed to study the current opening effect and the physical process of SOS in pulsed power system.
    为了研究半导体断路开关(SOS)的截断过程及其在脉冲功率系统中的工作特性,建立了半导体断路开关的电流控制模型,对p+-p-n-n+掺杂结构的半导体断路开关进行了数值模拟研究。
短句来源
    Chopping at the Tail of Lightning Impulses
    雷电冲击电压波的波尾截断
短句来源
    Using Multiple Cut-off Device (with Gap) on Transformer Lightning Impulse Chopped Wave Test
    使用多级(间隙)截断装置进行变压器雷电冲击截波试验
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  truncation
An Estimation of the Truncation Error for the Two-Channel Sampling Formulas
      
The aim of the article is to obtain an estimation for the truncation error in the
      
This resulted from the truncation error between the numerical solution and exact solution of the Reynolds stress equations.
      
Truncation fragments of the α subunit were screened for interactions against these two substrate fragments.
      
Significant and escalating truncation of the redusome DNA causes cell aging due to an arising and increasing deficit of fRNAs and, for this reason, the lack of required ions near certain structural genes.
      
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This paper presents the mathematical model of the control system-transfer matrix which has the double input, double output and the double closed loop according to the characteristics of energy loop in electric energy feedback system. And the sufficient conditions of steady state decoupling are developed using the transfer matrix, providing the basis for the reasonable design and dynamic analysis of the electric energy feedback system

本文根据电能封闭传动中能量封闭环的特点,选取适当点“截断”能量环取出输入与输出参数,推导出具有双输入双输出双闭环控制的电能封闭传动控制系统的数学模型—传递矩阵。并通过传递矩阵导出输入参数与输出参数稳态解耦的基本条件,从而为闭环控制的电能封闭传动控制系统的合理设计和进一步进行动态分析提供了依据。

The truncation error caused by non-continuous sampling timer is one of the main factors influencing the measurement accuracy of sampling wattmeter. on the basis of the reference paper, these truncation errors of nonsinusoidal electrical power corresponding to the two kinds of signal processing method are theorically analysed and researched by means of Fourier Series analysis. The results show that the error produced by the same harmonics of voltage and current, especially the first harmonics of voltage and current,...

The truncation error caused by non-continuous sampling timer is one of the main factors influencing the measurement accuracy of sampling wattmeter. on the basis of the reference paper, these truncation errors of nonsinusoidal electrical power corresponding to the two kinds of signal processing method are theorically analysed and researched by means of Fourier Series analysis. The results show that the error produced by the same harmonics of voltage and current, especially the first harmonics of voltage and current, comprises the main part of the truncation error existing in the simultaneous sampling measurement of nonsinusoidal power, and the signal processing method presented in the paper can reduce the truncation error greatly, even though the analog signals are discretized over a single period. The simulative computing resul(?) demonstrates that the error can be limited within 0.01%.

采样定时间隔非连续可调导致的截断误差是影响取样瓦特计测量精度的主要因素之一。在文基础上。用Fourier级数分解法,对两种信号处理算法对应下非正弦交流电功率的截断误差进行了理论分析和研究,说明:同次项电压、电流谐波尤其是基波电压、电流引起的截断误差构成了非正弦交流电功率取样法测试中截断误差的主要部份。而采用文的信号处理算法即便是在信号周期内离散模拟电信号,仍可使电功率截断误差大大削弱。模拟计算结果则表明,其值可被控制在0.01%之内。

In this paper, the high frequency transient components of the vacuum arc voltage and current were investigated experimentally. It was observed that many unsuccessful choppings happened in the arc unstable processes, which induced the high frequency oscillation of the arc voltage and current. The load capacitance, the contact parallelled capacitance and the connecting wire inductance have different influences on the high frequency transient components and the chopping currents.

通过试验研究了小电流真空电弧不稳定时电弧电压、电弧电流的高频变化过程,观察到电弧不稳定过程中存在许多不成功截断,导致电弧电压和电弧电流波形上叠加高频分量。负载电容、触头并联电容和回路连线电感等对电弧电压、电弧电流的高频过程具有不同的影响;也影响真空开关的截流值。

 
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