Theoretical and empirical research on the path of environmental technology innovation 并列题名:Theoretical and empirical research on the path of environmental technology innovation Theoretical and empirical research on tht city residential customer satisfaction Theoretical and empirical research on the symbiotic development of ethnic minority regions Theoretical and empirical research on the formation of tea price in China Theoretical and empirical research on the ecological and economic symbiotic Theoretical and empirical research on the development of rural service industry in China Theoretical and empirical research on rural revitalization Theoretical and empirical research on the relationship of financial development and income inequality Oretical and empirical research on the patent maintenance