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世界能源贸易网络的演化特征与能源竞合关系
何则1,2,3,4,杨宇1,2,3,*(),刘毅1,2,3,金凤君1,2
Characteristics of evolution of global energy trading network and relationships between major countries
HE Ze1,2,3,4,YANG Yu1,2,3,*(),LIU Yi1,2,3,JIN Fengjun1,2

图2. 1988—2017年全球能源贸易网络的主要拓扑参数演变

Fig.2. Evolution of the main topological parameters of global energy trading network, 1988-2017