The high and low order power spectra of Germany and China were generated by matlab.

Filename	Size	Update
功率谱\China_rail.fig	1822350	2019-08-06
功率谱\China_rail.m	428	2019-08-06
功率谱\Germany_rail.fig	7188058	2019-08-06
功率谱\Germany_rail.m	788	2019-08-06
功率谱	0	2019-08-06

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