conical section

This paper gives the new technique of tooth profile on the normal section of nobbing-shaving cutter involute worm which is imitated by hyperbola and suggests that axial section of grinding wheel can be obtained in hyperbolic form by dressing conical surface of grinding wheel along the inclined straight line.

给出了用双曲线拟合滚剃刀渐开线蜗杆法剖面齿形新技术，提出了锥面砂轮按斜直线进行修整，能够获得砂轮轴截面为双曲线形状。

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.

本文在已知确定圆锥曲线的基础上，通过确定圆锥曲线的中心和顶点，给出了圆锥曲线焦点的尺规作图方法。

The Conical Section Under the View of Projection

射影观点下的圆锥曲线

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

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。

Sector Constructing for Apex and Focus of Conical Section

圆锥曲线顶点与焦点的尺规作图

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

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