hammer action

例句：

1. 1. The hammer action on the metal surface is strong enough to remove rust.
   金属表面的锤击动作足够有力，可以去除锈迹。
2. 2. During the construction process, the hammer action helps to break down the concrete.
   在施工过程中，锤击动作有助于将混凝土打碎。
3. 3. The hammer action was used to drive the nails into the wood.
   锤击动作被用来将钉子钉入木头。