On the hasis of the known conical section, the essay discusses the methods of sector constructing for apex and focus of conical section by deciding the center of conical section.

1、

Problem is the most value conical section the key and difficult point for high school maths problem, is generally and other content combine comprehensive problem.

圆锥曲线最值问题是高中数学中的重点和难点问题，一般是和其他内容联合起来的综合题。

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2、

Torsional vibration of annular plate concentrator with conical section

锥形截面环状聚能器扭转振动的研究

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3、

Sector Constructing for Apex and Focus of Conical Section

圆锥曲线顶点与焦点的尺规作图

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4、

The Conical Section Under the View of Projection

射影观点下的圆锥曲线

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Curvature Character of Conical Section and Its Application on Cutter's Grinding

圆锥曲线的曲率特性及其在刀具刃磨中的应用

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Problems about the Conical Section Chord through a Special Point

关于过特殊点的圆锥曲线弦的问题

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7、

It mainly introduces the technical method by which air jig uses tow conical surface to clamp sleeve parts locatedly.

主要介绍气动夹具利用双锥面来定位夹紧盲孔套类零件的一种新工艺方法。

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8、

The cylindrical tube of the conical sleeve, which is provided with outer screw threads, is provided with at least one cushion ring and at least one screw nut.

安装在锥形套筒的外螺纹圆筒管上的至少一个垫圈和至少一个螺母。

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9、

A Model for the Profile Surface of Worm Cams with Conical Roller

圆锥滚子蜗形凸轮轮廓曲面的数学模型

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10、

Computer-aided Optimization Design of Big Taper Conical Roller Bearing

大锥角圆锥滚子轴承的计算机辅助优化设计

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11、

The Accurate Solution of Pressure Angle of Conical Roller Worm Cam Mechanism

圆锥滚子端面蜗形凸轮机构压力角的精确解

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Theory Research on Output Mechanism of Conical Roller in Nutation Gear

章动齿轮传动锥滚式输出机构的理论研究

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13、

Three expressions of conic section and central force problem

圆锥曲线的三种表示和有心力问题

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Magnetic Field Intensity Distribution in the Space Surrounding a Conic Section Carrying Current

载流圆锥曲线空间磁场的分布

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15、

Determining the parameters of quadratic surface or conic section by optimization

用最优化方法确定二次曲面和曲线的参数

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16、

A Note on A Method of Reducing Equation of Conic Section

《化简圆锥曲线方程的一种方法》的注记

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17、

Research on Conic Section Comparison Integral Interpolation Algorithm of Numerical Control System

数控系统二次曲线比较积分插补算法研究二次采油体积波及系数

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18、

Conic section road border model put forward to the form characteristic of the border of road, the ones that have realized to identification line of lane which are followed in real time.

针对道路边界的形状特征提出的二次曲线道路边界模型，实现了对车道标识线的实时跟踪。

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19、

To Classify the Conic Section with Primary Alternation; A branch and bound algorithm for a kind of indefinite quadratic programming

浅谈用初等变换对二次曲线进行分类一类不定二次规划问题的分枝定界法

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20、

A curve or surface whose equation ( in Cartesian coordinates) is of the second degree. The circular points are really a degenerate conic.

方程式是二次方程式的曲线或表面。虚圆点实际上是一退化的二次曲线。

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