main steam and feed water system

例句：

1. 1. The mainsteam and feedwater system is responsible for the safe operation of the power plant.
   主蒸汽和给水系统负责电厂的安全运行。
2. 2.The engineers were working on the main steam and feedwater system when they received a distress signal.
   工程师们在处理主蒸汽和给水系统时收到了求救信号。
3. 3.The new design of the main steam and feedwater system has significantly improved efficiency.
   新设计的主蒸汽和给水系统的效率有显著提高。