nonlinear FEA非线性有限元分析nonlinearadj.非线性的Nonlinear hyperbolic equations非线性双曲方程nonlinear frdquency modulation非线性调频nonlinear equality constraints非线性等式约束nonlinear channel equalization非线性信道均衡nonlinear Schrtodinger equation非线性薛定谔方程nonlinear decentralized control非线性分散控制nonlinear wave in shallow water浅水非线性波nonlinear coupled KdV equations非线性耦合KdV方程nonlinear distortion correction非线性失真校正nonlinear infrared spectrograph非线性红外摄谱仪