microphonen.麦克风；扩音器microphone amplification circuit传声 器放大电路microphone spaced apart technique传声器间隔布置技术microphone pressure response level传声器压响应级microphone tipped cardiac catheter顶端带微音器的心导管microphone temperature coefficient传声器温度系数microphone array sound localization传声器阵列microphone array speech enhancement麦克风阵列语音增强microphone spaced-apart technique传声器间隔布置技术Microphone effect of variable capacitor可变电容器微音效应microphone-array measurement technique声阵列测量