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为了保证冻结轨道的冻结特性，平面内轨道控制需要对半长轴、偏心率和近地点幅角都控制。 In order to guarantee the characteristics of frozen orbit, in-plane orbit control needs to adjust the semi-major axis, eccentricity, argument of perigee simultaneously. | ||
进行了基于平面三体模型的登月飞行器轨道控制方法的研究；研究了从近地低轨道到近月低轨道的飞行轨道； The flight trajectories from low earth parking orbit (LEO) to low lunar parking orbit (LLO) based on a planar three-body model are studied. | ||
本文利用整体微分几何的方法研究了人造卫星的轨道控制和姿态控制问题。 The orbit control and attitude control problems of satellite have been studied in this thesis by use of global differential geometry method. | ||
届时地面控制人员将点燃助推器，把卫星送入预定轨道。 Ground controllers will then fire the booster, sending the satellite into its proper orbit. | ||
因此，必须建立一套良好的测量体系以及精确的无砟轨道控制网。 So, we should found a suit of favorable survey system and the precise control networks. | ||
这颗彗星的轨道和地球的轨道相交。 The orbit of this comet intersects the orbit of the Earth. | ||
轨道是沿着键轴,有节面的分子轨道。 Pi orbitals are a molecular orbital that have a nodal plane through the bond axis. | ||
所以这是1s轨道,我们有n平方,或者1个简并轨道。 So that's the 1 s orbital - we have n squared or 1 degenerate orbitals. | ||
生产已经走上轨道。 Production has already been put on the right track. | ||
文章摘要：理论分析了轨道半长轴和轨道倾角对太阳同步轨道降交点地方时的影响。 Abstr: the effect of semi-major axis and inclination on the local time of descending node of Sun-synchronous orbit is analyzed. | ||
