中文说明：
介绍了时域有限差分(FDTD)法的基本原理，推导了二维TM模Yee算法的FDFD表达式，并结合算例阐述了基于MATLAB编程的基本方法
(on the finite-difference time-domain (FDTD) method to the basic principles Derivation of 2D TM mode Yee's theorem expression, and explained with examples based on MATLAB programming methods)
English Description：
This paper introduces the basic principle of finite difference time domain (FDTD) method, this paper derived the 2-d FDFD expression of TM mode Yee algorithm, combined with the examples this paper expounds the basic method based on MATLAB programming (on the finite - difference time - domain (FDTD) method to the basic all Derivation of 2 d TM mode Yee