例句與造句

1. For example, the unit sphere S ^ 2 ( 1 ) is a model for the two-dimensional elliptic plane.
2. As for the M鯾ius plane, there exists a 3-dimensional model : the geometry of the elliptic plane sections on an orthogonal cylinder ( in \ R ^ 3 ).
3. In elliptic geometry, an "'elliptic rectangle "'is a figure in the elliptic plane whose four edges are elliptic arcs which meet at equal angles greater than 90?
4. These quaternions arise in " Kinematic algebras and their geometries " alongside ordinary quaternions and the ring of 2 ?2 real matrices which Karzel and Kist cast as the kinematic algebras of the elliptic plane and hyperbolic plane respectively.
5. It's difficult to find elliptic plane in a sentence. 用elliptic plane造句挺難的