For residents in urbanized areas, whether their daily travel time is stable or they have a constant travel time budget has been one of the focuses of research for many years. 城市居民一天出行的平均時(shí)耗是否具有一定的穩定性，或者是否存在固定的出行時(shí)耗預算，多年來(lái)一直是城市交通領(lǐng)域工作者的研究熱點(diǎn)之一。
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