am (amplitude modulation )造句

例句与造句

1. Units : megahertz ( mhz ) am ( amplitude modulation ) , 200 and up are for military use , but are staffed by the same civil controllers
   单位：兆赫，调幅， 200以上为军用，亦为民航管制员执勤。
2. It's difficult to find am (amplitude modulation ) in a sentence. 用am (amplitude modulation )造句挺难的