The understanding of recycle economy intension in educational circles is still not deepened at present,and the definition of the recycle economy extension is also not clear.

Based on China s economic situa- tion,this paper explores the relationship between internal economic cycles and external economic cycles,analy- zes the relationship between economic growth and great powers E/I economic cycles with grey relational analysis methods,and puts forward some proposals for making good use of its internal econ.

There had energed many towns in Jiangnan since Ming Dynasty,each of which had its unique economic connotation.

The article analyzes grim situation facing current refining & petrochemical enterprises' resources and energy consumption as well as pollutant emission and emphatically introduces Sinopec Zhenhai Refining & Chemical Company's practice in establishing internal cyclic economy mode with high-efficiency utilization of resources and energy as well as zero waste emission as two major goals.