| 1. | The spacecraft orbited mars three times
太空船绕火红四周的轨道转三周。 |
| 2. | The spacecraft orbited the earth 14 times and reached an altitude of 343 kilometers
宇宙飞船绕地球飞行了十四圈，并到了一个海拔343公里的高度。 |
| 3. | The landsat spacecraft orbits the polar regions of the earth at a height of 920 kilometers
地球资源卫星航天器以920公里的高度环绕地球的两极地区运行。 |
| 4. | While spacecraft orbiting mars can show objects in greater detail , they often cannot make an image of the entire planet at once
虽然绕火星运转的太空船拍摄到的照片也很详细，但却拍摄不到火星的全景。 |
| 5. | Said dr . james w . head iii , a professor of geological sciences . photographs taken by a spacecraft orbiting mars indicate that active volcanoes may still exist on the planet
言出地质学专家海德博士.由一艘绕火星运行的飞船所拍摄的照片显示火星上仍有可能存在着活火山 |
| 6. | The u . s . spacecraft mercury - atlas 5 is launched with enos , a chimpanzee , aboard ( the spacecraft orbited the earth twice and splashed - down off the coast of puerto rico )
1961年，美国宇宙飞船水星宇宙神5号载着一只叫以挪士的黑猩猩发射升空（飞船绕地球轨道飞行了2周后落入波多黎各海岸的水中） 。 |
| 7. | The u . s . spacecraft mercury - atlas 5 is launched with enos , a chimpa 6886536 ee , aboard ( the spacecraft orbited the earth twice and splashed - down off the coast of puerto rico )
1961年，美国宇宙飞船水星宇宙神5号载着一只叫以挪士的黑猩猩发射升空（飞船绕地球轨道飞行了2周后落入波多黎各海岸的水中） 。 |
| 8. | Accroding the models , design idea and development setting are put forward . combing the spacecraft orbit , attitude dynamics with computer graphics , the satellite simulation software based on 3d real - time display technique is developed
根据上述模型，提出了卫星轨道与姿态仿真软件的设计思想选择开发运行环境，并将卫星轨道、姿态动力学与计算机图形学相结合，设计了基于三维实时动态显示技术的卫星轨道与姿态仿真软件。 |
| 9. | Selecting the image elements of earth and moon centers as observed quantity , measurement noise model and observed equations of autonomous navigation system are built up . the spacecraft orbit is determined by using the recursive weighted least square based on ud factorization
在奔选取地心和月心像素作为观测量,建立了符合实际情况的量测噪声模型和自主导航系统的观测方程,并利用基于ud分解的递推加权最小二乘算法估计了奔月探测器的轨道参数。 |
