variable flow pump造句

例句与造句

1. Analyzing the performance curves of pumps and network in a variable flow pumping system , concluding the influence factors of energy saving and the optimal ranges of variable frequency drive ( vfd )
   摘要通过分析变频水泵及管网系统在变工况下的特性曲线，得出影响水泵变频节能效果的主要因素和变频调速的适用范围。
2. It's difficult to find variable flow pump in a sentence. 用variable flow pump造句挺难的