中文说明：本程序主要用于时间序列的去趋势算法，也就是常说的DFA。
English Description：
This program is mainly used for the detrended algorithm of time series, which is often called DFA.
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中文说明：本程序主要用于时间序列的去趋势算法，也就是常说的DFA。
English Description：
This program is mainly used for the detrended algorithm of time series, which is often called DFA.