片语
prime navaid facility[航]
NAVAID Navigational Aid导航设施
airplane real-time navaid system飞机实时导航系统
navaid lighting detecting灯光检测
airfield navaid lighting机场灯光
NAVAID Radio Aid to Navigation中法
Navaid light detecting助航灯光检测
navaid lighting灯光
navigation aid助航设备;导航设施
navaid wind-finding导航测风