高级轨道天文观测台
advanced orbiting astronomical observatory
轨道天体观测
orbiting astronomical observation
轨道天文观测
orbiting astronomical observation
轨道天文台
OAO
orbiting astronomical observatory
城市轨道车辆
metro vehicle
urban railway car
transit cars
urban rail passenger vehicle
urban rail car
urban railcar set
Mass transit vehicle
urban railway vehicle
urban railway vehicles
urban rail vehicle
urban track vehicle
城市客运轨道车辆
urban railway passenger cars
urban rail car for passenger transport
urban railway passenger car