椭球

In this paper, unit moving trihedron is first constructed for a point on the surface of a revolution ellipsoid.

以旋转球体面上某建立一个大地坐标单位活坐标架。

Isoperimetric inequality for sphere and ellipsoid is discussed, and the isoperimetric inequality of some region satisfying certain conditions is given.

全应力的变化范围常用应力球方程和应力球面来描述。