water-cooled drum

例句：

1. 1.The water-cooled drum is used to cool the engine oil.
   这个冷却水筒用来冷却发动机油。
2. 2. The engineers installed a water-cooled drum in the factory.
   工程师们在工厂里安装了一台冷却水筒。
3. 3. The water-cooled drum was designed to improve the efficiency of the cooling system.
   这个冷却水筒的设计是为了提高冷却系统的效率。