不规则变动是指现象除了受各种变动的影响以外,还受临时的、偶然性因素或不明原因引起的非周期性非趋势性的随机变动。如地震、洪灾或一些偶然因素对社会经济所造成的影响及结果。不规则变动是不以人的意志为转移的,是无法控制的。
分形维数随外加电压的改变呈现不规则的变动。
The change of fractal dimension was irregular with the change of voltage.
旅游业的行业特点决定了中国入境旅游时间序列的发展趋势中存在明显的季节变动因素及不规则因素。
Seasonal change and irregular change factors exist evidently in time series of China's inbound travel, which is determined by the industrial characteristics of tourism.
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