北京批发企业空间格局演化与区位选择因素 |
韩会然,杨成凤,宋金平 |
Impact factors of location choice and spatial pattern evolution of wholesale enterprises in Beijing |
HAN Huiran,YANG Chengfeng,SONG Jinping |
图2 不同时间段北京批发企业空间核密度分析 |
Fig. 2 Kernel density analysis of wholesale enterprises of Beijing in different periods |
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