In particular, plentiful results are obtained for planar systems. Analysis of equilibria for planar systems is an important task in the qualitative theory.
对二维系统特别是平面系统,定性理论的研究已取得丰富的结果。
参考来源 - 退化奇点的广义正常区域判别法及有关分岔·2,447,543篇论文数据，部分数据来源于NoteExpress
方法利用中心流形定理并结合平面系统的分支理论。
Methods Using the theorem of center manifold and bifurcation theory of planar system.
介绍了浮标平面系统中定向传感器的工作原理，结构及使用效果；
This paper describes the working principle, structure and used results of the directional sensor of the buoy platform system.
平面系统（1）具有重要的生物和物理背景，大量的神经网络模型都是以这种形式被提出的。
The planar delay differential system (1) has significant biological and physical backgrounds. For example, some special cases of (1) have been proposed as models of neural networks.
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