长三角地区生物医药技术合作网络的空间演化及驱动机制

刘通, 毛炜圣, 刘承良

The spatial pattern evolution and driving mechanism of the directed network of technological cooperation in the Yangtze River Delta

LIU Tong, MAO Weisheng, LIU Chengliang

图2 城市技术合作有向加权网络构建方法示例

Fig. 2 Diagram of the construction method of the directed weighted network for inter-city technical cooperation