The Evaluation of Point Inclusion Test for Planar Polygon;
平面多边形内外点判定算法评估
Using computer Algebra system-Mathematica,we get all non-zero critical point values of the system.
研究一类具有零特征根的三次多项式系统的奇点判定量问题 ,借助符号计算系统Mathematica ,首次计算出了该系统的全部奇点判定量 ,并给出了应用实例。
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
Center-Focus Determination and Bifurcation of Limit Cycles of the Equator for Planar Polynomial Differential Systems;
平面多项式微分系统中心焦点判定与赤道极限环分支
Center Problems and Bifurcation of Limit Cycles for Several Classes of Planar Polynomial Systems
几类平面多项式系统的中心焦点判定与极限环分支
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
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
To converge on or toward a central point of focus;be focused.
集中于焦点在中心焦点或向中心焦点集中；被集聚
Focal length: The distance between the centre of a lens and its principal focus.
焦距:镜头中心与其主焦点的距离。
The midpoint Between the foci is the center. One property of an ellipse is that the reflection off its Boundary of a line from one focus will pass through the other.
焦点之间的中点为中心。椭圆的一个特性是:连自一个焦点的直线边界反折会通过另一个焦点。
The flatter the ellipse, the farther apart are the foci, and the farther each focus is from the center .
椭圆越扁平，两焦点之间的距离越远，每个焦点离中心的距离也越远。
Changes the control focus in the current running custom dialog
改变当前自定义对话框中的控件焦点
Identification of Unmarked Focus and Marked Focus;
无标记焦点和有标记焦点的确定原则
Financial Mechanism-A Highlighted Issue in Negotiation upon Climate Change;
资金机制:气候变化谈判的博弈焦点
Focus on of Issues on WTO Negotiation of Fishery Subsidy;
WTO渔业补贴谈判焦点问题之探讨
Specifies the text displayed in the status bar when a control has the focus.
指定在控件得到焦点时，状态栏中显示的文本。
Stability of Homoclinic Loops to Saddle-Focus in Arbitrarily Finite Dimensional Spaces
任意有限维空间中鞍焦点同宿环的稳定性
A Study of Negative Focus in Polarization Structure from Focus Theory;
从焦点理论看否定式偏正结构的否定焦点
Specifies whether or not selected text appears selected when a control loses the focus.
指定当控件失去焦点时，控件中选定的文本是否仍显示为选定状态。