采用变流量调节时，存在定零压差点和变零压差点两种运行调节方式。
When the regulation is performed by variable flow rate, there exist two operation regulation m.
采用变流量调节时，存在定零压差点和变零压差点两种运行调节方式。
When the regulation is performed by variable flow rate, there exist two operation regulation modes with fixed zero pressure difference and variable zero pressure difference.
本文介绍并分析了离心式水泵的负载特性和变流量调节方法，对比了其能耗大小。
This article describes and analyzes the load characteristics of centrifugal pumps and variable flow regulator method, compared the size of its energy consumption.
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