navigationaladj.导航的；航行的navigationn.导航；航行；航海navigational grid航海方格坐标navigation marker导航标志,航标Navigational zone适航航区navigation plotter导航用测绘板navigation monitor航行监测仪navigation English航海英语navigational light导航灯navigational error导航错误navigation element导航元素navigation trainer导航教练器