Therefore , these poems carry an apparent modern feature.

By discussing the near sound field distribution,it shows that there is a critical pole between the near field and the far field,and the variation of the critical pole is influ.

Analyzes the market characteristics and developing trend of domestic chemical fertilizer industry,appraises the present situation of chemical fertilizer stock companies,and presents the opinions on some important companies.

Under these circumstances, the market characteristics of motor vehicle service industry pose new challenge.

To understand the effect of market characteristics on the value of market information under uncertain condition,we develop a game-theoretic model to study how market characteristics moderate the effect of market information on firm profits.