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- Lunar landing trajectories 登月轨道
- Lunar Landing Trajectory Design Based on Invariant Manifold 基于不变流形的登月轨道设计
- News of the lunar landing swept the country. 登陆月球的消息一下传遍全国
- lunar landing trajectory 登月轨道
- The first lunar landing was achieved by the Apollo program on July 20,1969. 首次登月由太阳神太空计划于1969年7月20日完成。
- A manned spacecraft;several manned lunar landings. 载人宇宙飞船；几个人类策划的登月计划
- The newspaper report did not indicate whether the lunar landing is manned or unmanned. 报道未透露登月是载人还是无人的。
- Early games programs such as Tic-Tac-Toe,or Noughts and Crosses,and Lunar Landing were written in what was to become Bill's second language,BASIC. 早期的游戏程序如“三棋杀三子”，或“画圈打叉游戏”，及“登月”就是用后来成为比尔的第二种语言BASIC来写的。
- ESA wants the International Moon Programme to begin in 2002 with a 300 million-pound mission to test lunar landing techniques. 欧洲航天局希望国际月球项目能够在2002年启动，通过价值3亿英镑的爆炸发射来检测月球登陆技术。
- The Altair lunar landing craft is being developed to carry up to four astronauts to the moon's surface and allow them to stay there for up to a week. 牵牛星月球登陆航天器将运载5名宇航员登陆月球表面，使他们可以在月球停留一周时间。
- As LRO gradually descends to a lower orbit, the images will improve and provide closer looks at the lunar landing sites. 说：随着这个探测器轨道继续降低，图像将会进一步改善，而且会提供对月球登陆点的距离更近的照片！
- Early games programs such as Tic-Tac-Toe, or Noughts and Crosses, and Lunar Landing were written in what was to become Bill's second language, BASIC. 早期的游戏程序如"三棋杀三子"，或"画圈打叉游戏"，及"登月"就是用后来成为比尔的第二种语言basic来写的。
- This year it plans to launch a satellite that will orbit the moon as part of preparations for an eventual lunar landing (after 2020, officials say) by a Chinese citizen. 今年他们还准备发射一颗围绕月球轨道运转的卫星，这颗卫星将为最后的登月计划（2020年以后，有官员说）准备的一部分。
- One replays the tense minutes before the first lunar landing, as the astronauts and controllers struggled with computer crashes, radio failures and a major navigational snafu. 其中一部重演第一次登陆月球前的紧张时刻，当时太空人及控制人员正紧急处理电脑当机、无线电失灵及重大的导航问题。
- Mr,Smith has long wished for a chance to relate his lunar landing experience to the yong people around him, but he never has enough time at his disposal. 史密斯先生早就希望能有机会向周围的年轻人讲述他的登月经历，但他一直没有足够的支配时间。
- Early games programs such as Tic-Tac-Toe, or Noughts and Crosses, and Lunar Landing were written in what was to become Bill's second language, BASIC.&nb. 早期的游戏程序如“三棋杀三子”，或“画圈打叉游戏”，及“登月”就是用后来成为比尔的第二种语言BASIC来写的。
- Following the promoting Chang’E-1 lunar orbiter mission, the lunar landing mission and sampling return lunar mission are also considered by Chinese scientists and engineers. 伴随着绕月探测计划嫦娥-1的实施，中国科学家和工程师们也在考虑月球着陆探测和采样返回探测计划。
- In this paper, shooting methods based on an initial variable guess technique are proposed to solve the TPBVP, and the optimal landing trajectory is obtained. 本文利用一种基于初值猜测技术的打靶法求解这个两点边值问题，得到软着陆最优轨迹。
- Here you can see the a replica of the first airplane or the first lunar lander. Watch the lunar landings. 这里你可以看到世界上第一架飞机的复制品或者第一个登月舱的模型。
- First, the Maximum principle is used to generate an optimal guidance law for lunar landing, and the TPBVP is to be solved as a result of the numerical solution for optimal trajectory. 文中首先应用极大值原理设计了最优着陆制导控制律，此时求解最优轨迹变成一个两点边值问题(TPBVP)。
