例句與造句

1. In the limiting case of a degenerate ellipse with an eccentricity of 1, the orbit extends from the initial position of the infalling object ( R ) to the point source of mass M.
2. the following formula gives the eccentricity " e " if the conic section is not a parabola ( which has eccentricity equal to 1 ), not a degenerate hyperbola or degenerate ellipse, and not an imaginary ellipse:
3. It's difficult to find degenerate ellipse in a sentence. 用degenerate ellipse造句挺難的