piezoelectric detector

例句：

1. 1.The piezoelectric detector is used to detect the presence of a specific frequency in the air.
   压电探测器用于检测空气中特定频率的存在。
2. 2. The piezoelectric detector was able to detect the sound even at a distance of 50 meters.
   压电探测器能够在50米的距离内检测到声音。
3. 3. The piezoelectric detector is widely used in various fields, such as medical imaging and seismology.
   压电探测器在医学成像和地震学等领域得到了广泛应用。