noun 下载 🔗分享 子载波,副载波 A separate signal carried on a main radio transmission, often carrying additional information such as voice or data. Examples : "The radio station uses a subcarrier to transmit song lyrics and artist information alongside the music. " 这家电台使用子载波,在播放音乐的同时传输歌词和歌手信息。 technology electronics communication signal frequency sound media 与AI对话词汇游戏阅读练习