field of tangent vectors造句

例句与造句

1. However, in a Lorentzian manifold, we have a metric tensor, which picks out a preferred vector field among the vector fields which are everywhere parallel to a given timelike or spacelike vector field, namely the field of tangent vectors to the curves.
2. It's difficult to find field of tangent vectors in a sentence. 用field of tangent vectors造句挺难的