Futhermore, the hydrological calculation procedure, such as flow separation with beeline slanting cut and ascertaining frequency year should be introd.

Based on the hydraulic calculation program for gas network with single gas source,a hydraulic calculation program for multiple gas sources is developed by node equations and automatic numbering of nodes and pipe sections.

Considering influence of gravity,flexural equation and curve is achieved by integration,and calculating program is obtained based on MATLAB 7.

Combined with practical project,it introduces the application of CASLO/fx-4500 calculator program language coordinate in actual project,and discusses its calculating formula as well as the calculating program.

In addition, presents the principle,method and steps for the strength calculation of the header with nonequal diameter opening row by the calculating program for the header with equal diameter opening row.

The calculation program design of the overstep equation set for obtaining the suspended chain curve;

Application of GPS and total-station instrument with calculation program in the highway and bridge engineering;

The calculation program for the seismic detector constant in short period record recorded with pen;