However, since China is also changing from the planned economy to the market economy, and the gradual economic reform makes China form four-dimension economy, this course in China has its characteristics.

The status in quo of the economical four stage semi control commutation control system for electric locomotives in China is analyzed.

In the dualistic economy, because of the development of the market economy and socialization production, the medical insurance of floating work force, especially of farmers, is more prominent.

Construction of urban and rural relationship should abandon traditional way of thinking of changing dualistic economy into a unified economy.

In deeply analyzing the actuality of the transfer of country labour force,the author raised some measures pertinent to this problem under a dualistic economy.

A Endogenous Growth Model of Dual EconomyAbout Rural Labor Transfer;

FDI and The Dual Economy Transition:A Theoretical and Empirical Study on Central China;

Analysis of current situation of Chongqing s urban-rural dual economy and its changing theory;