中文说明：利用时域有限差分（FDTD）仿真二维（2D）横磁波（TM）的传播，吸收边界条件为完全匹配层（PML）。
English Description：
Finite difference time domain (FDTD) is used to simulate the propagation of two-dimensional (2D) transverse magnetic wave (TM) with perfectly matched layer (PML) as absorbing boundary condition.