说明：  这是一段模拟电荷法（scm)的matlab源程序，求解了超高压输电线路下方工频电场，仿真出了离地面1.5m处的二维电场模型，该程序经过验证，准确无误，谢谢。
(This is a matlab source program of the simulated charge method (scm). It solves the power frequency electric field under the UHV transmission line and simulates the two-dimensional electric field model 1.5m above the ground. The program has been verified and is accurate. Thank you.)