中文说明：为铝板中lamb波频散曲线的绘制代码，运行代码可获得对称模式和反对称模式的数据及图像。在代码中可以修改纵波速度和横波速度后，也可以绘制其它材料板材中的lamb波频散曲线。
English Description：
The code is used to draw Lamb wave dispersion curve in aluminum plate. The data and images of symmetric mode and antisymmetric mode can be obtained by running the code. After the P-wave velocity and S-wave velocity can be modified in the code, Lamb wave dispersion curves in other materials can also be drawn.