Through research of the theory of the deduction coefficient of passenger train, using computer simulation of the operation and after drawing many operation diagrams, a conclusion has been drawn that, when passenger train travels at the highest traveling speed of 160 km/h, the deduction coefficient of speeding-up passenger train reaches 1.

Based on the study on the calculating problem for section carrying capacity of four-aspect double track automatic block district,this paper presents the calculating formulas of train headway in four-aspect signal system and the calculating method of the deduction coefficient for passenger express.

Based on this background,this paper studies the calculation method of section carrying capacity of passenger dedicated line in a variety of circumstances deeply,and discusses deduction coefficient calculation method among several kinds of high-speed railway with different velocity.

We have got the values of carrying capacity and trains coefficient of removal under various organization schemes of train operation by working out experimental train working diagram.

Based on a historical investment to and theoretical analysis of the evolution of civilized social patterns, this paper is to advance the law of replacement of different civilized social patterns, expound the mechanism and the role this law has played in reaching a new social stage, and discuss in brief the theoretical and realistic signifi- cance of putting forward such a law.

And in the Wei Dynasty and the Jin Dynasty,the replacement speed quickened.

Based on the documents of literary sketches of the Wei, Jin, and Six Dynasties, the paper explores the coexistence and replacement of the old and new elements of words in the medieval Chinese language from the perspectives of lexicology and synonyms.