使用大量的有限元法求解偏微分方程，代码里有很完整的注释和解释，中介真值程度度量，基于中介真值程度度量的图像分。- Using a large number of finite element method to solve partial differential equations, Code, there are very complete notes and explanations The true extent of the value of the intermediary measure, measure the true extent of the agency based on the value