nonlinearityn.非线性nonlinearadj.非线性的nonlinear interpolator非线性内插器Nonlinear KdV equation非线性KdV方程nonlinear fiber optics非线性光纤光学nonlinear inequalities非线性不等式组nonlinearity vibration非线性振动nonlinear distribution非线性分布nonlinear ship motions非线性运动nonlinear demodulation非线性解调nonlinear rotor system非线性转子系统nonlinear oscillations非线性振动