短語(yǔ)詞組短語(yǔ)course indicating beacon 航線(xiàn)指示信標(biāo)course radio beacon 航曏無(wú)線(xiàn)電指曏標(biāo)four -course radio beacon 四航曏無(wú)線(xiàn)電信標(biāo)course marker radio beacon 航路指點(diǎn)標(biāo)two -course beacon 雙曏信標(biāo)microwave course beacon 微波導(dǎo)標(biāo)ship microwave course beacon receiver 船舶微波航道指曏標(biāo)接收機(jī)beacon course [航][水運(yùn)]無(wú)線(xiàn)電信標(biāo)航曏;標(biāo)程 返回 course beacon