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This analysis proposes a carbon emission dimension of specific vacation. Through setting up the system model of the Nanjing metro with a complex technique, the quickest path associated with the guests' travels is gotten. Combined with origination-destination (OD) files regarding the wise cards, the full total length associated with the people' moves is obtained. By selecting the operation dining table to estimate the carbon emissions generated by the daily procedure associated with subway system, the carbo
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