[电] point-to-point radio communicat-ion

diǎn jiān wú xiàn diàn tōng xùn ㄉㄧㄢˇ ㄐㄧㄢ ㄨˊ ㄒㄧㄢˋ ㄉㄧㄢˋ ㄊㄨㄥ ㄒㄩㄣˋ