nonlinear LS非线性最小二乘nonlinearadj.非线性的nonlinear diffraction非线性衍射nonlinear performance非线性nonlinear infall mode非线性下落模型nonlinear uneertainty非线性不确定性nonlinear approaching非线性逼近nonlinear time series非线性时间序列nonlinear effect mode非线性作用模式nonlinear water waves非线性水波nonlinear temperature非线性温度nonlinear feedforward非线性反馈