中文说明：二维声子晶体带结构计算，材料是铅柱在橡胶基体中周期排列，格子为正方形。采用PWE方法计算。
English Description：
According to the calculation of two-dimensional phononic crystal band structure, the material is lead column arranged periodically in the rubber matrix, and the lattice is square. PWE method was used.