subharmonic vibration

例句：

1. 1.The subharmonic vibration of the engine is causing the car to shake violently.
   发动机的次谐波振动导致汽车剧烈摇晃。
2. 2.The scientists discovered a new method for detecting subharmonic vibrations in materials.
   科学家们发现了一种检测材料中次谐波振动的新方法。
3. 3. The subharmonic vibrations are caused by the irregular movement of the earth's crust.
   次谐波振动是由地球地壳不规则运动引起的。