Based on water balance model,this paper analyzes the relationship between figure coefficient of infiltration water and figure coefficient of surface storage under the condition of border irrigation.

The power index of movement distance and time has little influence on the figure coefficient of infiltration water in the course of surface water movement,which can be substituted by a stabl.

Study on Permeability Coefficient of Asphalt Mixture;

Then,the permeability characteristics of asphalt mixtures with different gradations were analyzed with the new device and the permeability data were analyzed statistically,on this basis and with reference to the related specification at home and abroad,the critical permeability coefficients of asphalt mixtures were presented.

Improved load shape coefficient method in low voltage line loss calculation

25mm)and shape coefficient on the settling velocity were discussed,finally three correlative mathematical models were set up,which established the theoretical foundation for studying WMFS's fluidization and technological parameters.

This paper put forward a new method, in which digital elevation model (DEM) was used to differentiate sub-basins and to extract average slope and maximum length of flow concentration which makes a positive contribution to calculate shape coefficient.