指泵的扬程（即泵的能量供应）与流量的关系曲线。
离心泵特性曲线上的效率最高点称为设计点，泵在该点对应的压头和流量下工作最为经济。
Centrifugal pump characteristic curve on the efficiency of the highest point known as the design point, a pump at the point corresponding to pressure head and flow of work under the most economic.
在分析现有定子曲线特性的基础上，得出了一种具有较好综合性能的低噪声定子曲线，可为高性能叶片泵的设计提供参考。
On the base of analysing the properties of existing stator curves, a low noise stator curve with better features was suggested in this paper, which could be applied to design high quality vane pumps.
选泵时，有时须考虑生产工艺要求，选用不同形状Q - H特性曲线。
Pump selection, and sometimes need to consider the production process requirements, selection of different shapes QH characteristic curve.
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