兰西城市群“双核分离”结构探讨:区域经济一体化背景下民营企业的投资网络
周恒, 杨永春

Dual-core separation structure of the Lanzhou-Xining urban agglomeration: Investment network of private enterprises under the background of regional economic integration
ZHOU Heng, YANG Yongchun
图4 企业年营业收入与投资数量的相关性拟合
Fig.4 Correlation between annual revenue and investment amount of enterprises in the Lanzhou-Xining urban agglomeration