navigational technology航海科技;航海技术
navigational system[航] [水运] 导航系统;[航] [水运] 无线电导航系统
navigational instruments航海仪器;导航仪器
navigational planets[航] 导航行星;航用行星
navigational intelligence航行情报
navigational tree导航树
navigational rangefinder航用测距仪
navigational data航行资料
navigational plot导航标图
ADJ（形容词） Navigational means relating to the act of navigating a ship or an aircraft. 航行的; 飞行的 [usu ADJ n]
The crash was a direct result of inadequate navigational aids.
坠机是导航不力的直接后果。