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- earth orbital rendezvous 地球轨道会合
- Earth Orbit Rendezvous 地球轨道会合
- We sent an unmanned rocket into earth orbit. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- One year is one Earth orbit around the Sun. 一年就是地球绕太阳一周的时间。
- The booster was Saturn C-3 and the key technique was lunar orbit rendezvous. 采用萨杜恩C-3运载火箭，关键技术是月球轨道会合。
- Next came three flights to test rendezvous between the manned spacecraft and the unmanned lunar landing craft in Earth orbit, culminating with the crew transferring from one to the other. 后来的三次是测试载人飞船与绕地飞行的不载人登月飞船的会合，计划的高潮是宇航员从一个飞船转移到另一个飞船。
- Optimal trajectories are obtained by using a direct adjoining approach (so called the D form Lagrangian)for the interception or the rendezvous of a target in low circular Earth orbit by a vehicle which is initially in a high orbit. 航天器从高轨道向位于低地球圆轨道的靶目标实施拦截或进行交会 ,并用间接求解的直接伴随方法 ,即用D型拉格朗日方法求解其优化问题。
- Key words: CO2, Earth orbital parameters, LGM, China climate. 关键词：双多普勒雷达，飑线，三维风场，强对流带。
- The Soviet Union put the first satellite into Earth orbit. 苏联发射了第一颗人造卫星进入地球轨道。
- Vicarious Calibration of an Ocean Salinity Radiometer from Low Earth Orbit. 地球低轨道海洋盐分辐射表的替代校准。
- The first two Rangers, launched in 1961, never got out of earth orbit. 最初的两艘游骑兵太空船，在1961年发射，始终没有脱离地球轨道。
- First is launch, where pressing the button to stop a moving bar at the right point determines success.Course corrections and an orbital rendezvous (to undock the lunar module) are next. 首先是发射阶段，决定成功的关键在于在恰当的时机即使按下按钮以停止一个指示条的上升。
- The earth orbits the sun once every 365.25 days. 地球每365.;25天绕太阳轨道一圈。
- The two satellites were placed respectively in LEO (low earth orbit) and geostationary transfer orbit. 两颗卫星分别进入近地轨道和地球同步转移轨道。
- Periapsis in Earth orbit,the point in its orbit where a satellite is nearest to the Earth. 以地球为中心的最近点，人造卫星轨道上离地球中心最近的点。
- optical orbital rendezvous apparatus 轨道会合光学装置
- The earth orbits the sun once every 3 6 5 . 2 5 days . 地球每365。25天绕太阳轨道一周。
- radar orbital rendezvous apparatus 轨道会合雷达设备
- Advanced Lunar Orbital Rendezvous 高级月球轨道会合
- Within weeks, the Soviets launched another satellite into Earth orbit, Sputnik Two. 仅在几个星期内，苏联就发射了第二颗卫星??史泼尼克2号??进入地球轨道。
