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- Don't fancy your chances during this unstable period. 在这个动荡时期,不要过于自信有把握。
- Knowing only an approximate unstable period orbit(UPO) embedded in a discrete chaotic attractor, this paper addresses the problem of system stable state in terms of using linear feedback control method. 讨论当已知存在于混沌吸引子中的近似周期轨道,用变量反馈控制方法进行控制时系统稳定状态的情况。
- It is thought the distribution of unstable periodic orbits determines the dynamical properties of the billiard systems. 因此,对于运动场系统,不稳定周期轨道的分布特征决定了系统的动力学行为。
- A controller is designed based on Lyapunov stability theory,and an unstable periodic orbit(UPO) tracking of uncertain chaotic systems is considered. 基于Lyapunov稳定性理论,设计了控制器,实现了快速跟踪混沌系统的不稳定周期轨道。
- W.Hai, Y.Duan, L.Pan. An analytical study for controlling unstable periodic motion in magneto-elastic chaos[J]. Phys. Lett., 1997,A234:198. 海文华;段宜武;朱熙文等.;控制离子云混沌运动中的不稳定性[J]
- One of important characteristics of chaos is that an infinite number of unstable periodic orbits (UPO’s) are embedded in the chaotic invariant sets. 非线性动力学的一个很重要的应用领域为神经科学。混沌现象的一个很重要的特征就是混沌不变集中嵌入着无穷多的不稳定周期轨道(unstable periodic orbits,UPO)。
- The chaotic motion can be controlled to a regular motion via stabilization of the chaotic orbit onto an unstable periodic orbit embedded within the chaotic attractor. 利用压缩映射和线性逼近产生一个参数微扰反馈序列,使混沌轨道稳定在嵌入混沌吸引子内的一个不稳定周期轨道上,实现将混沌运动转化为周期运动。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- The price of gasoline is unstable. 汽油价不稳定。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- Most of the countries in the region have unstable economies. 这个地区大多数国家的经济都不稳定。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史?
- The cause of flight of capital is the unstable political situation. 资本外逃是因为政治的不稳定。
- The table is unstable because one leg is shorter than the others. 这桌子一条腿比其它的腿短,所以不平稳。