vibration

释义

n. 震动,颤动

例句

1. 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。
2. 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。