Research on the evolution of spatial structure of three major urban agglomerations in China Rvesearch on the evolution of spatial structure for urban retail business Research on the evolution of spatial structure of Chinese province tourism by the disequilibrium perspective Study on the optimal scale of cities and urban agglomerations in China Research on the evolution of spatial stucture of Chinese province tourism by the disequilibrium perspective Research on optimizing the spatial structure of Shandong peninsula urban agglomeration driven by land capital 并列题名：Research on the evolution of spatial structure of Chinese province tourism by the disequilibrium perspective Research on the evolution of labor relations and the construction of harmonious labor relations in China 并列题名：Research on the evolution of spatial stucture of Chinese province tourism by the disequilibrium perspective Research on the innovation spatial structure of China urban agglomeration and its effect on quality of economic growth