Nonlinear PD非线性PDnonlinearadj.非线性的nonlinear recurrence非线性递推nonlinear Lagrangian非线性Lagrange函数nonlinear properties非线性特性nonlinear equalizers非线性均衡器nonlinear reflection非线性反射nonlinear connection非线性联络nonlinear controller非线性调节器nonlinear prediction非线性预测nonlinear eigenvalue非线性特征值nonlinear scattering非线性散射