water-tube boiler

例句：

1. 1.The water-tube boiler is a type of boiler that uses steam to heat water.
   水管锅炉是一种使用蒸汽加热水的锅炉类型。
2. 2. The water-tube boiler is widely used in industrial processes.
   水管锅炉在工业过程中被广泛使用。
3. 3.The water-tube boiler has a long history and is still popular today.
   水管锅炉有着悠久的历史，至今仍然很受欢迎。