First, we take the analysis of phase-plane on the invariant plane for the perturbed and unperturbed systems.
首先，我们在常值平面上对扰动和未扰动系统进行相平面分析；
The plane single-footprint was coarse matched by polar-radius invariant moment as descriptors in this paper.
采用极半径不变矩作为描绘子对平面单足足迹进行粗匹配实验。
In this paper the functionally invariant solution of the wave equation of anti-plane problems in the orthotropic material is obtained.
本文给出了正交异性材料反平面间题波动方程的函数不变解。
In this paper the functionally invariant solution of the wave equation of anti-plane problems in the orthotropic material is obtained.
本文给出了正交异性材料反平面间题波动方程的函数不变解。
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