这是高等电磁场数值分析方法的基础，以pulse函数为基函数，采用矩量法对直导线电容求解实现程序，并画出电容随直导线分段数的变化图形来。-This is higher electromagnetic field numerical analysis method based on pulse function as the basis function method of moments on the straight wire capacitance solving procedures, and draw the capacitance to change with the number of segments of straight wire graphics.