“波段”用英语怎么说

愈来愈多的电视台和广播电台使无线电波段愈来愈拥挤。More and more TV and radio stations are crowding the airwaves.卡车司机用民用波段无线电呼救。A truck driver used his CB radio to call for help.中短波段收音机a radio set with medium and short wavebands...

“波段”的拼音为：bō duàn...