空对地无线电频率

[电] air-to-ground radio frequency

kōng duì dì wú xiàn diàn pín lǜ ㄎㄨㄥ ㄉㄨㄟˋ ㄉㄧˋ ㄨˊ ㄒㄧㄢˋ ㄉㄧㄢˋ ㄆㄧㄣˊ lv4