短語詞組短語instrument guidance system approach 使用儀表導(dǎo)航系統(tǒng)進(jìn)場?陸IGS Instrument Guidance System 儀表引導(dǎo)系統(tǒng)instrument guidance system localizer signal 儀表駕駛系統(tǒng)航曏信標(biāo)信號instrument landing system guidance information 儀表著陸引導(dǎo)信息 返回 instrument guidance system