Trajectory tracking by using the measurement of LOS(Line-of-Sight) from space-based infrared sensors is one of the key technologies in the space early warning system.是什么意思_Trajectory tracking by using the measurement of LOS(Line-of-Sight) from space-based infrared sensors is one of the key technologies in the space early warning system.在线翻译_英语_读音_用法_例句