difference of economic development的用法和样例：
- However, the difference of economic development levels and no economies of scale have somehow hindered the intra-industry trade between China and South Korea.
- By principal components analysis,this paper selects 20 indexes,by which it evaluates and classifies the difference of economic development level in the regions in Guizhou province.
- The difference of economical development level among all counties, cities and districts of Liaocheng City was greater.
- Wenzhou has a unique model of economic development.
- Fenyang a good momentum of economic development.