By using the least action principle and the saddle point theorem in Critical Point theory,the existence theorems for periodic solutions of a class of nonautomomous second-order systems are obtained.
分别利用极小作用原理及鞍点定理在势泛函为一次线性泛函和次二次泛函之和的条件下讨论了一类非自治二阶Hamilton系统周期解的存在性。
Two saddle point theorems were proven in according to the H α conjugate map and its properties.
借助一类非闭非凸的 α-较多锥 ,对多目标规划问题引进 Hα- Lagrange映射及其鞍点的概念 ,利用 Hα-共轭映射及其性质得到了两个鞍点定理 ,并对含有不等式约束的多目标规划问题建立了鞍点定
The existence of periodic solutions for second order systems (M(t)u′)′+Au+F(t, u)=h(t), u(0)-u(T)=u′(0)-u′(T)=0, is dicussed with sublinear nonlinearity, by using the saddle point theorem, the problem has at least one periodic solution.
讨论了一类二阶系统(M(t)u′)′+Au(t)+ F(t,u(t)=h(t),u(0)-u(T)=u′(0)-u′(T)=0,在非线性项满足次线性条件下周期解的存在性,利用鞍点定理得到该问题至少存在一个周期解。
Furthermore,it also discusses the application of theorem of zero point in our life,to achieve the goal of combining theory and practice in mathematical education.
高等数学中的零点定理是闭区间上连续函数的一个重要性质,利用它既可以证明方程根的存在性或求根的近似值,即解“等式”问题,又可以解“不等式”问题,本文从生活中谈谈零点定理的几个应用,以达到在数学教育教学中理论与实践相结合的作用。
Through some examples the author enumerates three kinds of problems testifying the existence of formula root and further proves it by using Zero-Point Theorem, Rolle Theorem , Lagrange Middle Theorem , reduction ad absurdum proof,etc.
通过例题列举了利用零点定理、罗尔定理、拉格朗日中值定理,反证法等证明方程根存在的三类问题。
This article extends the zero-point theorem for continuous functions from a closed interval to other types of intervals,and a series of zero-point theorems for continuous functions on relevant intervals are obtained,so that the theory on the zero-point theorem can be applied in more general cases.
将闭区间上连续函数的零点定理扩展到其它区间上,得到若干个相应区间上连续函数的零点定理,从而使零点定理理论更完善、应用更广泛。
This system only measures the central spot (inside the microprism area).
这个系统仅测定中心点曝光值（微棱镜区域内）
An outlying settlement.
边区村落远离中心定居点
The orientation and development of instrumental analysis and research centers in key colleges and universities;
重点高校分析测试中心的定位与发展
Sobel Operator for Locating Core of Fingerprint Based on Matlab
基于Matlab的Sobel算子的指纹中心点定位
THE DETERMINATION OF CENTER-FOCUS AT THE INFINITY FOR A CLASS OF POLYNOMIAL DIFFERENTIAL SYSTEM;
一类多项式微分系统无穷远点的中心-焦点判定
Decision Theorems for the Center and Focus of a Class of Nonlinear Differential Equati ons
一类非线性微分方程组的中心和焦点判定定理
the center point or middle of something.
物体的中心点或中点。
At the Thirteenth National Party Congress we decided on the strategy of "one central task, two basic points".
十三大确定了“一个中心、两个基本点”的战略布局。
Analysis and Definition of "Dot" and "Plane"in Planar Constituent from Visual Psychology;
平面构成中“点”“面"的视觉心理学分析和界定
Determination of Centre Focus for a Class of Non-Polynomial Differential System
一类非多项式微分系统中心焦点的判定
Function and Significance of the Mark of Muscle Origins and Terminations --Ascertaining the compendiary center of the mark of muscle origins and terminations in lower limbs;
肌肉代起止点的作用及意义——下肢肌肉起止点简化中心的确定
Criterion of Center-focus and Limit Cycle Bifurcation for a Class of Three-order Nilpotent Singular Points
一类三次幂零奇点的中心焦点判定与极限环分支
neck pivot point (P point)
颈部转动中心点（P点）
Weighted centroid localization algorithm is simple and no communication is needed while locating.
加权质心定位算法计算简单，定位过程中节点间无通信开销。
She decided to forgo dessert for a few days.
她决定几天不吃甜点心。
The assessor asserts that he inserted the deserted desserts in the desert with alert.
估价人认定他用警惕把被抛弃的甜点心插入沙漠中。
"The second point is that the young members should recognize one leading centre only.
“这第二点呢就是：青年工作人员要认定一个领导中心。
Those who are timed for destruction must die now. The knowledge of this reached finality in her.
注定毁灭的人必须立刻死去。这种念头在她心中达到了极点。
