This paper puts forward a "Spectrum Analysis" method to analyse the random power oscillation in power system caused by external disturbance, and sets up a complete digital model.

本文提出了用“频谱分析”的方法分析外部扰动引起的电力系统随机振荡，并建立了完整的数学模型。

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It consists of three main parts: in the first part, we analyse the effect of multipath on code-tracking loops of receivers in Spread-Spectrum Ranging Systems.

本文分为三个主要部分：第一部分分析了多径对扩频测距系统接收机码跟踪的影响机理。

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Based on seismic periodic spectrum and probability analyse of seismic interval periodic, we have built up the prediction method of line synthesis probability.

在地震周期谱分析和地震间隔周期出现概率分析的基础上，建立了线性合成概率预测方法。

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Unlike my representatives, I had no staff to analyse them, no sense of their place in the spectrum of needs, and no understanding of the background and compromises that went into them.

ECONOMIST: Letters | The