mit开发的meep软件，是一个免费的有限差分时域(FDTD)模拟软件包，给出的代码用于计算一个周期圆孔的场强-mit meep developed software is a free finite-difference time-domain (FDTD) simulation software package, given the code used to calculate the field strength of a cycle round hole

给定边界条件，用有限差分法五点对称格式计算杆的热传导-Given boundary conditions, using finite difference method to calculate the five-point symmetrical format pole thermal conductivity