用于一维和二维传热问题的有限差分和有限元法数值计算-For one-dimensional and two-dimensional heat transfer finite difference and finite element method numerical calculation

fdtd时域有限差分法基于c++的实现，可以有效模拟地质雷达的电磁波-fdtd FDTD method is based on the realization of c++, can effectively simulate the electromagnetic GPR