measuring electret microphone

例句：

1. 1. The electret microphone is used in various applications, including recording and broadcasting.
   静电麦克风被用于各种应用，包括录音和广播。
2. 2.The electret microphone has a high sensitivity and can capture even the faintest sounds.
   静电麦克风灵敏度高，可以捕捉到最微弱的声音。
3. 3. The electret microphone is widely used in scientific research and medical diagnosis.
   静电麦克风在科学研究和医疗诊断中广泛使用。