An open curve formed by a plane that cuts the base of a right circular cone.
一个平面与正圆锥体的底部相交而形成的不闭合的曲线。
2
Standing on a square table, lift high an ice cream cone in the right hand.
站在一张方桌上，右手举起一个雪糕筒。
3
The equations is used whether roller is column or cone, cam is in spine or groove location, left or right helical, single head or many heads and how it is turning.