外商直接投资技术溢出空间效应及其变化——基于中国地级市的实证研究
季颖颖, 郭琪, 贺灿飞

Spatial effects of foreign direct investment technology spillover and its changes: empirical study based on panel data of Chinese prefecture-level cities
Yingying JI, Qi GUO, Canfei HE
图6 内外资技术差距2007年与2003 年差值的省级分布(数据来源:中国工业企业数据库)
Fig. 6 Technology gaps of domestic and foreign enterprises between 2007 and 2003 by province between 2007 and 2003(data from Chinese industrial enterprises database)