piezoelectric transformer

例句：

1. 1. The piezoelectric transformer is used to convert electrical energy into mechanical energy.
   压电变压器用于将电能转换为机械能。
2. 2. In the manufacturing process, the piezoelectric transformer is used to control the speed of the conveyor belt.
   在制造过程中，压电变压器用于控制输送带的速度。
3. 3. The piezoelectric transformer is a critical component in many electronic devices, as it can efficiently convert electrical signals into mechanical motion.
   压电变压器是许多电子设备中的关键部件，因为它可以将电信号高效地转换为机械运动。