navigation law[法] 航海法规navigationn.导航；航行；航海navigation through the canal通过运河的航行navigation safety assessment通航评估Navigation Support Equipment导航保障设备Navigation image information航行图像信息navigation power key project航电枢纽工程Navigation Apparatus Factory航海仪器厂Navigation Control Indicator导航控制指示器Navigation Aids Support Team助航保障小组Navigation Situation Display导航状况显示navigation detection circuit导航检测