MATLAB

代码说明：

  用matlab来做一个三维模型，包括两个部分： 1.长方体 2.很多个半径（远小于长方体边）很小的球体随机分布在长方体中。(Using MATLAB to make a three-dimensional model, including two parts: 1. a rectangular cube with a lot of radius (which is far smaller than the side of a rectangular body) and a small sphere is randomly distributed in a rectangular body.)