spacecraft 四级六级考研

The spacecraft made a successful reentry into the earth’s atmosphere.

成功地重返大气层。

There're three astronauts in the spacecraft.

在这艘里有三名航员。

After completing lunar swingby maneuvers, the A spacecraft is intended to orbit the Sun "Ahead" of planet Earth, and the B spacecraft "Behind".

在完成对探测器变轨后，A将在地球前方绕行太阳，而B则在"后方"绕行。

Abstract.The first orbit maneuver of lunar orbit insertion (LOI) must be implemented at the first perilune of the spacecraft flight to the moon.

月球捕获控制第一次制动必须在卫星向月球第一近月点完成。

The ships are fitted with C- and S-band monopulse tracking radar, Cinetheodolite laser ranging and tracking system, velocimetry system, and onboard computers to track and control the spacecraft.

测量配备有C-和 S-波段单脉冲跟踪雷达，激光测距经纬仪和跟踪系统，测速系统和舰载计算机去跟踪和控制。

New Horizons' trailblazing journey to the solar system's outermost frontier took it past the orbit of Mars today at 6 a.m. EDT , 78 days after the spacecraft launched.

新地平线打响了探索太阳系边疆第一炮，而在今天美国东部时间早上6点，在发射了78天后它成功跨越了火星轨道。