performance curves of pump造句

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。
to tune up the frequency of power supply by the transducer in the system, this adjusting make the speed of electromotor and performance curve of pump change . at last, it make the status of a pump alter
在变频调速恒压供水系统中，单台水泵工况的调节是通过变频器来改变电源的频率f来改变电机的转速n，从而改变水泵性能曲线得以实现的。
It's difficult to find performance curves of pump in a sentence. 用performance curves of pump造句挺难的