《英汉医学词典》variable capcitance microphone 变容微音器 directional variable microphone: 方向可变麦克风microphone effect of variable capacitor: 可变电容器微音效应variable directional microphone: 可变方向性传声器variable directivity microphone: 可变指向性传声器variable reluctance microphone: 可变磁阻传声器下载手机词典可随时随地查词查翻译