[电视] 已调伴音信号 modulated signal: 已调信号; 已调制信号amplitude-modulated sound: 调幅伴音amplitude-modulated sound transmitter: 调幅伴音发射机continuous wave modulated by sound: 音调调制等幅波frequency modulated sound: 调频声音下载手机词典可随时随地查词查翻译