nitrogen precharge pressure是什么意思

用法例句

Discusses the volume calculation of expansion tank in air conditioning water systems and the determination of installed position of water tanks, pre-charging pressure of closed water tanks, constant pressure value of pumps.

介绍了闭式水系统的特点 ,讨论了空调水系统膨胀水箱容积计算、水箱安装位置、闭式水箱的预充气压力值、水泵定压值的确定等问题。