navigational instrument navigational duty [交通運(yùn)輸工程]航行任務(wù)navigational data [交通運(yùn)輸工程]航行資料navigational chart navigational aid 導(dǎo)航輔助設(shè)備navigational (adj.) navigational adj.導(dǎo)航的；航行的navigation-pose 慣導(dǎo)大地法navigation-coal n.汽鍋用煤；鍋爐煤；蒸汽煤navigation-aids 航標(biāo)navigation-aid 航標(biāo)navigation signal equipment [交通運(yùn)輸工程]航行信號(hào)設(shè)備navigation satellite [航] 導(dǎo)航衛(wèi)星navigation mark positioning [交通運(yùn)輸工程]航標(biāo)定位navigation mark light [機(jī)械工程]航標(biāo)燈navigation mark 導(dǎo)航標(biāo)志；航道標(biāo)志navigation lock hydraulics [交通運(yùn)輸工程]船牐水力學(xué)navigation lock 船牐；通航牐navigation lights navigation light coding transponder [交通運(yùn)輸工程]航行燈編碼應(yīng)答器