nonlinearityn.非线性nonlinearadj.非线性的nonlinear FEM analysis非线性有限元分析Nonlinear Price Impact非线性价格冲击nonlinear BBM equation非线性BBM方程nonlinear conductivity非线性电导率nonlinear deformations大变形nonlinear characterics非线性特征nonlinear quantization非线性量化nonlinearity character非线性特性nonlinear fermentation非线性发酵nonlinear neutral type非线性中立型