查询词典 birational invariant

By Lasalle invariant theorem and Liapunov function, the global asymptotical stability of disease free equilibrium and the endemic equilibrium is proved.

利用La-salle不变原理和Liapunov函数得到了无病平衡点和地方病平衡点全局渐近稳定。

Jiuzhaigou has 108 "haizi" of varying sizes and shapes, but of invariant limpidity to the bottom of the lakes.

很久以前，九寨沟的东山上住着一位美丽善良的女神，九寨沟的西山上住着一位勤劳勇敢的男神。

Jiuzhaigou has 108 "haizi" of varying sizes and shapes, but of invariant limpidity to the bottom of the lakes. Some of the lakes are hidden in the valleys, and others inlay the virgin forests.

晴日天，湖底的水藻和沉淀物在阳光的照射下，发射出一圈圈色彩斑斓的光环，所以又被人们叫做"五花海"。

The input - output relationship of any linear time-invariant discrete system can be described by a difference equation The complete solution of a linear difference equation consists of two parts: the free component and the forced component.

任何一个线性时不变离散系统的输入输出关系都可用线性差分方程式来描写。差分方程式的解答包括两部分：即自由分量和强制分量。

Linear Fractional Transformation is adopted to translate the control of perturbation to the control of disturbance, then cost index is augmented, and with the min-max method, a robust receding horizon control law is derived. The sufficient conditions for the existence of the control law and closed-loop stability are also presented. The result is extended to time-invariant system with an infinite horizon, and its consistence with the robust control based on the concept of Quadratic Stability is verified.

首先利用线性分式变换，将摄动系统的鲁棒控制问题转化为对扰动系统的鲁棒控制问题；然后通过对性能指标的扩展，利用min-max方法，得到了鲁棒滚动时域控制律，并给出了其存在和使闭环系统渐近稳定的充分条件，并将结果扩展到对定常系统时域无穷的的情况，指出其与现有的基于二次型稳定概念提出的鲁棒控制的一致性。

In chapter 3, the problems of constructing finite-dimensional functional linear invari-ant spaces under a given differential operator as well as an inverse problem concerning thedescription of all operators possessing a given invariant space are investigated.

第三章中讨论了基于算法产生的两个互逆问题，即(1)构造在已知的微分算子下不变的有限维线性函数空间；(2)讨论拥有相同线性不变空间的微分算子的一般表达式。

Based on the explicit formulation of matrices on the given linear manifold, the general expression of the solutions to this least squares problem is obtained by using the method of the singular value decomposition and the unitarily invariant of the Frobenius norm.

在推导出所给线性流形中任意矩阵的显式表达的基础上，利用奇异值分解和Frobenius范数的酉不变性得到了该最小二乘问题通解的一般表达式。

The state-space representation of linear time-invariant fractional order systems is introduced, and a proof of their stability theory is also given.

介绍了分数阶线性定常系统的状态方程描述，并给出了其稳定性定理的一个证明。

For the difficulty of estimating the invariant set and Lipschitz constant of nonlinear link during the design of the synchronization controller for the nonlinear systems, an idea of getting Lipschitz constant adaptively estimated is presented.

针对非线性系统同步控制设计中，估计系统不变集和非线性环节李普希茨常数所存在的困难，提出在李普希茨常数未知时对其进行自适应估计的思路，并在此基础上用李雅普洛夫方法得到两个混沌鲁里叶系统同步的控制器。

Our objective in the presentstudy was to determine if the LLA during arterial hypotensionwas invariant with ICP.

我们本次研究的目的是确定不同颅内压情况下低血压时的脑血流量下限是否不变。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48