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- The first artificial satellite was fired off on October4,1957. 第一顆人造衛星于1957年10月4日發(fā)射升空。
- The life of an artificial satellite. 人造衛星的壽命。
- The artificial satellite was launched into orbit. 那枚人造衛星射入了軌道。
- Sputnik I as the first artificial satellite. 史普尼克1號是第一顆人造衛星。
- To decrease in orbit. Used of an artificial satellite. 能量衰減指人造衛星在軌道上運行時(shí)能量消減
- The decrease in orbital altitude of an artificial satellite as a result of conditions such as atmospheric drag. 能量消減人造衛星由于大氣阻力等的作用結果，在軌道高度上能量消減
- The first artificial satellite was fired off on October 4,1957. 第一顆人造衛星于1957年10月4日發(fā)射升空。
- A new artificial satellite has been launched again by China. 中國又發(fā)射了一顆新人造衛星。
- GPS-based orbit determination is nowadays one of the hotspots in satellite geodesy studies. 星載GPS定軌是目前衛星大地測量研究的熱點(diǎn)之一。
- The first artificial satellite was fired off on October 4, 1957. 第一顆人造衛星于1957年10月4日發(fā)射升空。
- The path of a celestial body or an artificial satellite as it revolves around another body. 運行軌道天體繞另一天體或人造衛星繞一天體旋轉所運行的軌道
- The orbit of the artificial satellite has an apogee of200 miles from the earth. 這個(gè)人造衛星的軌道，其最遠點(diǎn)在離地球200英里的地方。
- Do you know when the first artificial satellite of America was launched? 第一的;最初的;最早的;最先的;第一流的;最重要的
- Reaction power sends artificial satellites into orbit. 反作用力把人造衛星送入軌道。
- Hard there been no electronic computers, there would have been no artificial satellite or rockets. 如果沒(méi)有電子計算機,就不會(huì )有人造衛星或火箭。
- Rockets and artificial satellites can go far above the ionosphere. 火箭和人造衛星能夠到達電離層以上極遠的地方。
- The rocket climbs upward and onward, with an artificial satellite cradled in its nose cone. 隨帶裝在其前端錐形體內的一顆人造衛星，火箭一直向上，向前爬升。
- geometrical method of satellite geodesy 衛星大地測量幾何法
- That in 1969 the first artificial satellite was launched to the space is known to man. 1969年第一顆人造衛星上了天是眾所周知的。
- dynamical method of satellite geodesy 衛星大地測量動(dòng)力法
