Research on spatial co-agglomeration effect of industry from the perspective of urban clusters 并列题名：Research on spatial co-agglomeration effect of industry from the perspective of urban clusters Research on ventilation efficiency from the perspective of urban design Research on the development of cultural industries from the perspective of urban regeneration Research on consumption effect of online retail from the perspective of spatial spillover Research on judicial appraisal from the perspective of trial centers Research on the development of cultural industry from the perspective of industrial convergence Research on the coal industry development pattern from the perspective of green mining Research on organization of lndustrial clusters from the perspective of network Research on urban spatial evolution from the perspective of value chain