COVID-19病例与城市人口规模的标度律及其时间演化 |
许刚, 焦利民, 李新虎, 肖逸雄, 宫鹏, 龚健雅 |
Scaling law of COVID-19 cases and city size and its evolution over time |
XU Gang, JIAO Limin, LI Xinhu, XIAO Yixiong, GONG Peng, GONG Jianya |
图3 美国不同日期COVID-19累计确诊病例空间分布 |
Fig. 3 Spatial distributions of accumulated COVID-19 cases on four dates in the United States |
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