Earth Orbital Flight 地球轨道飞行
first manned orbital flight 首次载人轨道飞行
earth-orbital flight test 地球轨道飞行试验
orbital flight test 轨道飞行试验
orbital rendezvous flight 轨道会合飞行
earth-orbital practice flight 地球轨道练习飞行
orbital training flight 轨道训练飞行
earth-orbital velocity flight 第一宇宙速度飞行
Orbital and Weightless Flight 沿轨道失重飞行
The 15 minute sub-orbital flight achieved an altitude of 116 miles and a maximum speed of 5, 134 miles per hour.
这次15分钟的亚轨道飞行达到了海拔116英里的高度，最大速度为每小时5134英里。
It was the first of six vehicles to be built, though not equipped for orbital flight-having no engines nor a working heat shield.
企业号是建造的六架飞行器中的第一架，虽然不是为轨道飞行而装备- - -既没有引擎也没有一块起作用的挡热板。
The results of the two short flights made space officials believe the Mercury program was ready for its first orbital flight.
VOA: special.2009.06.17
Now,everything was ready for an astronaut to make an orbital flight.
VOA: special.2009.06.17
Everything was "A-OK" for an orbital flight.
VOA: special.2009.06.17
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