helicopter ground resonance

例句：

1. 1.The helicopter's sudden stop caused a loud noise that echoed through the valley.
   直升机突然停止发出的声音在山谷中回荡。
2. 2.The engineer was concerned about the helicopter's ground resonance issues.
   工程师担心直升机的地面共振问题。
3. 3.During the flight, the pilot noticed an unusual vibration in the helicopter's ground resonance.
   飞行过程中，飞行员注意到直升机的地面共振出现了异常振动。