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)

用于计算传热学五种常见对流扩散数值计算对比(Numerical comparison of five kinds of convection diffusion)