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 charge simulation method (scm) of matlab source, solving the EHV transmission line-frequency electric field below, simulation 1.5m from the ground out of the Agency)