图片局部放大功能 图片局部放大功能 图片局部放大功能-Pictures enlarged image zoom function Picture partial enlarged partial zoom function Picture

有限单元法求解一阶偏微分方程，使用的方法是加权余量法，方法快捷准确-Finite element method to solve the first-order partial differential equations, a method using a weighted residual method, fast and accurate method