Research on knowledge spillover, industrial agglomeration and enterprise location choice Research on knowledge spillover, industrial agglomerstion and enterprise location choice Research on knowledge spillovers in industry cluster and its influence on enterprise innovation performance 并列题名：Research on knowledge spillovers in industry cluster and its influence on enterprise innovation performance Research on knowledge heterogeneity, alliance governance mechanism and enterprise innovation performance Research on knowledge spillover of large enterprise in innovation network 并列题名：Research on knowledge heterogeneity, alliance governance mechanism and enterprise innovation performance Research on statistical models of China's industrial agglomeration and their application