有效声号 sound signal: 声波讯号; 声号; 声响信号; 声音信号; 音频信号; 音响信号the signal is sound: 发出信号combined light and sound signal: 声光混合信号compressed air sound signal: 压缩空气声响信号compressed-air sound signal: 压谱声响信号下载手机词典可随时随地查词查翻译