Least square method of polynomial or the method based on the given function are used to fit pump characteristic curve in pump selection or operation.
在水泵的选型或运行中，通常采用多项式的最小二乘法或根据假设的函数关系来拟合水泵性能曲线。
Determined that it is very important by comparing the total more accurate pump characteristic curve in the calculation of water hammer protection position.
通过比较确定较准确的水泵全特性曲线在水锤防护计算中有十分重要的地位。
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.
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。
Pump selection, and sometimes need to consider the production process requirements, selection of different shapes QH characteristic curve.
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。
Through a study in characteristic curve of the engine and hydraulic pump, the matching efficiencies between engine and fixed and hydraulic variable displacement pump were analyzed respectively.
综合发动机和液压泵的特性曲线，分别对发动机与液压变量泵、定量泵进行了匹配效率分析；
At present, the hydraulic transition process of pump usually using transformed by computer simulation of the compete characteristic curve.
目前，水泵处水力过渡过程主要利用改造过的水泵全特性曲线进行计算机模拟。
The virtual demo platform can generate automatically the characteristic curve and the analysis report of the pump besides demonstrate the whole experiment.
虚拟实验平台除完成个整实验过程，还能自动生成特性曲线、泵的分析报告和实验报告。
Pass the measurement of the characteristic curve of the pump of water, and, establish the experiment to choose reasonable of pump of water.
经由过程水泵的特征曲线的测定，并、串联实验来选择合理的水泵。
It is proved with the example that the new method works well for water pump efficiency characteristic curve fitting.
实例计算表明，采用该方法可以较好地拟合水泵效率特性曲线。
There exists a saddle type zone in the hydraulic moment curve of axial-flow pump blades which corresponds to the saddle zone of discharge-head characteristic curve of the pump.
轴流泵叶片水力矩随流量变化的关系曲线存在一个马鞍区，并与流量-扬程曲线的马鞍区相对应。
This paper explained the principle of constant-pressure water supply on the basis of characteristic curve of pipeline resistance and water pump head.
本文首先根据供水系统的管阻特性曲线和水泵扬程特性曲线，分析了恒压供水的原理；
This paper explained the principle of constant-pressure water supply on the basis of characteristic curve of pipeline resistance and water pump head.
本文首先根据供水系统的管阻特性曲线和水泵扬程特性曲线，分析了恒压供水的原理；
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