Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e2a2026c5161958ffc4673c90031fb37.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 urban economic base theory是什么意思，urban economic base theory的翻译，urban economic base theory音标、读音、用法和例句_沉淀汉英词典
Secondly, on the base of urban development and urban theory, studies urban, urban system and economic development. 其次，以城市发展理论和城市体系结构理论为基础，研究了城市，城市体系与经济发展的关系。