The sound, vibration, or shock caused by the striking together of two bodies.
震动由于两物体的撞击造成的声音、颤动或震惊
Even at full speed the ship's engines cause very little vibration.
这条船即使全速前进, 发动机的震动也很小。
He told me that middle C is equivalent to 256 vibrations per second.
他告诉我说中央C音相当于每秒振动256次。
