For the divided region is only the conductor plate, the computation cost is lower.
因为剖分区域仅为导体极，本方法的计算代价很低。
2
Earthing can be divided into two forms: connecting earth and connecting conductor substituted for earth.
接地可分为与大地连接、与替代大地的导体连接两种方式。
3
According to the difference of passing current and constructive mode of conductor, the conductor propagation is divided into three-phase, two-phase and single-phase propagation, etc.