柯林斯詞典bandspreading /?b?nd?spr?d??/ 1. N an additional tuning control in some radio receivers whereby a selected narrow band of frequencies can be spread over a wider frequency band, in order to give finer control of tuning 波段展開; 將窄段頻率擴展成寬段的收音調(diào)頻技術(shù) 返回 bandspread