说明：  该程序采用有限差分方法，用于计算冶金行业炼铁热风炉的格子砖传热计算，输入格子砖初始参数包含温度，换热系数和格孔直径等参数，就可以计算出格子砖的温度分布，对于专业工程人员学习传热模拟计算有很好参考价值。
(This program uses finite difference method to calculate the heat transfer of grid bricks in the ironmaking hot blast furnace of the metallurgical industry. By inputting the initial parameters of the grid bricks, including temperature, heat transfer coefficient, and grid hole diameter, the temperature distribution of the grid bricks can be calculated, which has good reference value for professional engineering personnel to learn heat transfer simulation calculation.)