中文说明：
程序可求解任意边界条件任意力（需手算或增加m文件将力等效到单元节点）的矩形板的单元受力及应力。
English Description：
The program can be used to solve the element forces and stresses of rectangular plates with arbitrary boundary conditions and arbitrary forces (which need to be calculated manually or equivalent to element nodes by adding m-files)