计算不同温度下麦克斯韦速率分布律的图像，并用辛普森方法求图像下方面积(The image of Maxwell velocity distribution law at different temperatures is calculated and the area under the image is calculated by Simpson method)

2018.01最新编译，matlab需要2016b以上。 将需要运行的exe文件拷贝到MATLAB文件夹下，如bellhop3d.exe(The latest compilation(2018.01). Matlab should be 2016b or later. Copy the the "exe" file that you need to run under the "MATLAB" folder, such as "bellhop3

能够计算不同排列情况下的能带结构，只需更给晶格常数，选择排列方式以及介电常数即可(It is possible to calculate the energy band structure under different arrangement conditions, only by giving lattice constants, arranging permutations and permittivity.)