By using the classical orbitelement differences method, the periodic characteristics of relative motion and the influence of atmospheric drag on relative motion were analyzed.
基于经典轨道要素偏差法分析了相对运动特性和大气阻力对相对运动的影响。
2
Below the planetary display, each bit serial adder controls one element of the display, the orrery, each of them corresponding to calculate that planet's orbit.
下面显示的行星，每个位串行加法器控制，显示的元素，太阳系仪，其中每一个对应计算出地球的轨道。
3
This paper has discussed "a small assistant" 's design method and skill in multimedia software from three respects such as element design, dynamic result design and sport orbit design, etc.