轨道占用识别
track occupancy identification
track occupied identification
track occupancy recognition
地球四极和八极带谐项对卫星轨道的影响
impact of the deformation of the Earth on the satellite orbit
动力系统的轨道
orbit of the dynamical system
列车对轨道的动力作用
dynamic interaction between train and track
人操纵的轨道实验室
manned orbiting laboratory
闲置不用的轨道卫星
UOS Unmanned Orbital Satellite
异动力地球发射的轨道间航天器
heteropowered earth launched inter-orbital spacecraft
与地球同步轨道的环境卫星
GOES Geostationary Orbit Environmental Satellite