[电] airbone electronic terrian map system
kōng yùn diàn zǐ dì xíng tú xì tǒng ㄎㄨㄥ ㄩㄣˋ ㄉㄧㄢˋ ㄗˇ ㄉㄧˋ ㄒㄧㄥˊ ㄊㄨˊ ㄒㄧˋ ㄊㄨㄥˇ