短語詞組短語Robinson direction -finding system 羅賓遜測(cè)向系統(tǒng)emergency radio direction -finding system 應(yīng)急無線電測(cè)向系統(tǒng)aural -null direction finding system 消聲測(cè)向儀array -based direction finding system 陣列測(cè)向系統(tǒng)multi -beam amplitude-comparison direction finding system 多波束比幅測(cè)向系統(tǒng) 返回 direction-finding system