1·Pluto has an elliptic orbit.
冥王星的轨道是椭圆形的。
2·This paper presents some equations of adjoint motion for spacecrafts moving in elliptic orbit of different plane.
本文给出在非共面椭圆轨道上运行的航天器的伴随运动方程。
3·Occasionally, Pluto's highly elliptic orbit passes inside that of Neptune, making Neptune the furthest planet from the sun during these times.
有时，冥王星的高椭圆轨道内的传递海王星，使海王星离太阳最远的行星，在这些时间。
4·The method of designing special elliptic orbit which was critical inclined, sun synchronous and repeating ground trace was expounded, and the calculation process of this method was summarized.
阐述了临界倾角太阳同步回归轨道这种特殊椭圆轨道的设计方法，总结了其轨道要素的计算步骤。