自己编写的，求解杆问题的简单一维定常传热，并且将数值解与解析解进行了比较，最后用高斯消去法求解的矩阵，适合新手FORTRAN入门参照-I have written, to solve the problems stem simple one-dimensional unsteady heat transfer, and the numerical solution were compared with the analytical solution, and finally with Gauss