Second, by using empirical method, we find out that the distribution of the change of foreign exchange rate is not normal distribution but fractal distribution.
然后通过实证，指出了外汇汇率变化不服从正态分析，而是服从分形分布；
The return of RMB exchange rate has a characteristic of fluctuation clustering, does not comply with the normal distribution and has an obvious peak and fat tails.
人民币汇率收益率波动有集群性效应，不符合正态分布，有尖峰厚尾的特点。
It was found that the reaction rate submitted normal distribution with reaction time and a normal distribution model was proposed to fit the kinetics data.
与随机孔模型对比，发现正态分布时间模型能较好地描述煤焦的气化动力学规律。
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