... weak nonlinearity 弱非线性 weak normality 弱正规性 weak operator topology 弱算子拓扑 ...
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首先，用多尺度法导出弱非线性强迫激励系统的频率响应函数。
Firstly, by means of multiple scale method the frequency response function of weakly nonlinear vibration system is derived.
本文使用弱非线性、非轴对称扰功波的孤立波模型模拟螺旋型涡破裂。
The solitary wave theory of the weakly nonlinear, non-axisymmetric disturbances is used to model the spiral vortex breakdown.
采用非线性抛物化稳定性方程（PSE）研究了非平行边界层的弱非线性稳定性。
The weak nonlinear instability of a nonparallel boundary layer is studied by nonlinear parabolized stability equations(PSE).
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