closed water systems

• 闭式水系统

closed water systems的用法和样例：

例句

1. With the provisions in relating codes, states that normal make-up water pumps and accident make-up water pumps should be set separately for a closed HVAC water system.
   摘要结合相关规范的规定，提出了暖通空调闭式水系统正常补水泵和事故补水泵应分开设置。