When SGBEM is combined with FEM through appropriate techniques, a symmetric global system matrix can be obtained without ruining the symmetric virtue of the FE part.

• 当采用SGBEM与FEM连结使用时，经由适当的处理技巧，能够得到具对称形式之整体系统矩阵，而不破坏原本有限元素部分之系统对称性。