The wavelet analysis is a key method to solve this kind of the problem because of its unique time-frequency localization characteristic, compared with traditional methods.
鉴于传统信号处理方法的局限性，小波分析以其具备时频局部特性，成为解决此类问题的一个重要方法。
Wavelet analysis, also called wavelet transform, is a new analysis method with good time frequency localization characteristic, so it is suitable for fault analysis of power system.
小波分析(或称小波变换)是一种新的时频分析方法，它具有良好的时频局部化特性，适用于电力系统故障分析。
The expressions of folklore have the characteristic of colony, localization, changeability and variability and so on.
民间文学艺术表达的创作具有群体性、地域性、传承性以及变异性等特征。
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