RT Journal T1 China’s innovation factor agglomeration level measurement, spatial difference and formation mechanism A1 WANG Su-su, LU Zhe-fan, LU Xian-xiang PB Journal of Guizhou University of Finance and Economics FD 2022-09-15 YR 2022 JF Journal of Guizhou University of Finance and Economics JO Journal of Guizhou University of Finance and Economics VO 40 IS 05 SP 1 DO K1 innovation factor agglomeration index;spatial difference;structure source;QAP LK {https://gcxb.gufe.edu.cn/EN/article/article_9356.shtml}