换频发讯

【电】 frequency-exchange signaling

换的英语翻译：

barter; exchange; trade

频的英语翻译：

frequency; frequently

发的英语翻译：

hair; issue; send out; deliver; utter; develop; discover
【医】 capilli; capillus; crinis; crinis capitis; hair; Mit.; pili; pilo-
pilus; thrix; trich-; tricho-

讯的英语翻译：

dispatch; interrogate; message