This method need fewer computation time than connecting scheme ( cs ) based on boundary integral equation and can be apply more easily and more widely . all the numerical results listed in this dissertation have demonstrated the validity and high efficiency of our research works 该方法比以前用积分方程级联法求解内部口径导纳矩阵需要更少的计算时间，并且能应用于具有更复杂腔体内部结构的含腔目标。
