Space deployable antenna is composed of a reflective mesh and a deployable truss, forming a mesh parabolicsurface.
空间可展天线由索网和可展构架组成，形成索网抛物面形反射面。
2
Paper describes the principle and device for machining inducer blades with non-developable parabolicsurface profiles with general purpose machines by using the linear-cutting method.
本文介绍了利用线切削方法在通用机床上加工非可展直纹抛物面导风轮叶型的原理与装置。
3
A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.