Secondly, the national and international research in this aspect essentially focus on the circular orbit, in this text the research focus on the elliptical orbit. This paper give a estimated formula of calculation the de-orbiting duration of spacecraft.
其次,国内外大部分在该方向的研究都在圆或近圆轨道下进行的,通过理论推导和仿真本文给出了在椭圆轨道上离轨时间的计算。
参考来源 - 电动力缆绳离轨时间特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Under the control of the Sun's gravitational force, each planet maintains an elliptical orbit and all of them travel in the same direction.
在太阳引力的控制下，每个行星都维持在一条椭圆形的轨道上，并按照相同的方向移动。
But the general solutions call for a elliptical orbit.
但是，一般的解决方法，还是需要一个椭圆轨道。
The Moon's elliptical orbit means its distance from the Earth is not constant.
月球椭圆型的轨道意味着它到地球的距离是变化着的。
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