compound expansion steam engine

例句：

1. 1. The compound expansion steam engine is a complex piece of machinery that converts chemical energy into mechanical energy.
   复合式膨胀蒸汽机是一种复杂的机械设备，将化学能转化为机械能。
2. 2.In the early days, compound expansion steam engines were used to power pumps and compressors in factories.
   在早期，复合式膨胀蒸汽机被用于工厂中泵和压缩机的动力。
3. 3.The compound expansion steam engine has been widely used in various industries due to its efficiency and reliability.
   由于其效率和可靠性，复合式膨胀蒸汽机在各种行业中得到了广泛应用。