1.
a fixed reference point on the concave side of a conic section.
圆锥截面凹面的固定参考点。
2.
The ortho cone helicoid was used interrsect intercept by the ortho cone helicoid and the cylinder.
正圆锥螺旋面是正圆柱螺旋面被同轴正圆锥面截得。
3.
Some Conclusions on the Sectional Area of the Cubic Circumscribed Cone of the Same Class;
正方体外接圆锥一类截面面积的几个结论
4.
Study on curve equation of unfolded-drawing on the cut-cone surface
截头圆锥体表面交线展开图曲线方程的研究
5.
a frustum formed from a cone.
用圆锥体做的平截头体。
6.
B、What shape is the flank of a taper?
圆锥的底面是（）形，圆锥有（）个底面。
7.
ellipticblade sectio
椭圆叶片截面椭圆桨叶截面
8.
Probe the kids to know the taper, hold its features and understand its plan.
使学生认识圆锥，掌握圆锥的特征，会看圆锥的平面图。
9.
Research on Grinding the Convexity of Taper Roller Conical Surface Lines via Centerless Grinder
无心磨床磨削圆锥滚子圆锥面素线凸度的研究
10.
A cone is a solid body which narrows to a point from a round, flat base
圆锥体是底面圆平顶尖的实体
11.
A cone is a solid body which narrow to a point from a round, flat base.
圆锥体是底面圆平顶尖的实体。
12.
a surface whose plane sections are all ellipses or circles.
截面都是椭圆或圆的表面。
13.
It has two sides, one is a circle, the other is a camber.
生：圆锥有两个面，一个面是圆形，另一个面是曲面。
14.
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
15.
A chisel with a rounded, troughlike blade.
半圆凿带有凹凸横截面的圆形的凿子
16.
Location measurement of circular rod in glass tube
玻璃圆管中圆形截面杆柱位置的测定
17.
A conic section whose plane is not parallel to the axis, base, or generatrix of the intersected cone.
圆锥的一部分，其切面既不平行于轴和基面，也不平行于圆锥母线
18.
Theoretical Calculation and Design for Cylindrical and Conical Bent Crystal Spectrograph
圆柱面和圆锥面弯晶谱仪的理论计算及设计