片语
earth-orbit simulator地球轨道模拟器
earth s orbit地球公转轨道
earth s orbit periods地球轨道周期
Earth parking orbit地球停泊轨道
earth to orbitEarth to Orbit (ETO) describes the process or means of placing a payload into an orbit around the Earth. Traditionally this has used rockets, however ETO can also include much more exotic forms of transportation such as railguns and hypersonic cannons and Space elevator
earth-orbit rendezvous绕地轨道会合
earth-orbit escape脱离地球轨道
earth synchronous orbit地球同步轨道