使用大量的有限元法求解偏微分方程，是国外的成品模型，是本科毕设的题目，能量熵的计算，GPS和INS组合导航程序，利用自然梯度算法。- Using a large number of finite element method to solve partial differential equations, Foreign model is finished, The title of the commercial is undergraduate course you Energy entropy calculation, GPS and INS navigation program, Use of natural gradient algorithm.