paraboloid

/puh-rab-uh-loid/US // pəˈræb əˌlɔɪd //UK // (pəˈræbəˌlɔɪd) //

抛物线,抛物面体,抛物面,抛物线型

Definitions

n.名词 noun

1
Geometry.
- : a surface that can be put into a position such that its sections parallel to at least one coordinate plane are parabolas.

In the first case the surface is called an Hyperboloid of one sheet, in the second an Hyperbolic Paraboloid.
If it lies at the infinity, the plane at infinity is a tangent plane, and the surface is called a paraboloid.
The Silky Epeira also has all the elbow-room she needs; and her paraboloid is not without elegance.
Behind this was a curious, paraboloid projector made up of hundreds of tiny, carefully orientated coils.
Also, the form of cambered surface should be a paraboloid—not arc or arc of circles.