Secondly, the key part of the FDTD method is studied.
其次研究了时域有限差分法的核心部分。
The dissertation consists of the main four parts, as follows: Firstly, the foundation of the FDTD method is studied.
本文主要从以下四个部分展开论述：首先研究了时域有限差分法的基础部分。
The propagation characteristic of the VLF in the earth-ionosphere waveguide is analyzed by applying the FDTD method.
应用时域有限差分（FDTD）方法分析甚低频在地电离层波导中的传播特性。
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