中文说明：用有限元方法求解Helmholtz方程，可以自动划分生成网格，解有图像显示
English Description：
The finite element method is used to solve Helmholtz equation. The mesh can be generated automatically and the solution can be displayed by image
Solving Helmholtz equation by finite element method
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中文说明：用有限元方法求解Helmholtz方程，可以自动划分生成网格，解有图像显示
English Description：
The finite element method is used to solve Helmholtz equation. The mesh can be generated automatically and the solution can be displayed by image