例句與造句

1. Spread spectrum communication takes an important part in military communication and in civil communication . especially in recent years , code - division multiple access ( cdma ) system based on spread spectrum communication is widely used in mobile communication
   擴頻通信在軍事通信和民用通信中都具有重要的意義，特別是近幾年來，以擴頻通信為基礎的cdma通信系統在移動通信中得以廣泛應用。
2. It's difficult to find code-division multiple access (cdma) in a sentence. 用code-division multiple access (cdma)造句挺難的