例句與造句

1. Some examples are complex vector spaces and complex projective spaces, both with their usual Riemannian metric, and the complex unit balls with suitable metrics so that they become complete and Riemannian symmetric.
2. In algebraic geometry, the Calabi conjecture implies the Miyaoka Yau inequality on Chern numbers of surfaces, a characterization of the complex projective plane and quotients of the two-dimensional complex unit ball, an important class of Shimura varieties.
3. It's difficult to find complex unit ball in a sentence. 用complex unit ball造句挺難的