Scale invariance can be described by means of fractal and multifractal models.
尺度不变性可用分形和多重分形模型来表征。
The result shows that the sleep EEG series has the multifractal features as well as long range correlation.
计算结果表明，睡眠脑电序列具有长程相关性，而且是多重分形过程。
The multifractal growth process of the SEM images of catalyst surface is studied using fractal and multifractal theory.
本文讨论了催化剂表面SEM图象关于多重分形生长过程的分形和多重分形特性分析。
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