单词	比重瓶--路标塔--挂架
释义	比重瓶；挂架；路标塔pylon
随便看	navigational aid navigational aids navigational-aid satellite navigational aids {= navaid} navigational astronomy navigational astronomy--nautical astronomy navigational beacon navigational bearing navigational chart navigational computer navigational computer unit readout navigational computer unit readout (ncur) navigational control and display unit navigational control and display unit (ncdu) navigational correction navigational countermeasure navigational digital computer navigational digital computer，ndc navigational draft navigational flight navigational flight chart navigational gps receiver navigational instrument navigational lights navigationally