piezoelectric coupling

例句：

1. 1. The piezoelectric material is used in sensors to detect vibrations.
   压电材料被用于传感器中来检测振动。
2. 2. The piezoelectric effect is a phenomenon whereby an electric field is generated when a material is subjected to mechanical stress.
   压电效应是指当材料受到机械应力时会产生电场的现象。
3. 3. In the piezoelectric coupling, the strain energy is converted into electrical energy.
   在压电耦合中，应变能被转换为电能。