The spatial development strategy of city should be moderately dispersed.

As a famous contemporary writer of poem and prose, Yu Guangzhong has initiated a poetic theory and practice called "restricted prosaism" since 1960 s .

While moderate disparity in economic interests has positive effects on the realization of social stability, excessive disparity will bring a series of damages to the stability of society.

This paper has reviewed the current methods and their characteristics for synthesizing the high--dispersion catalysts used in direct coal liquefaction, putting emphasis oncatalytic mechanism of Fe--base catalysts investigated overseas.

Then the author takes advice to dispart power moderately and so on.