adjustable-blade propeller meaning in English

调距螺旋桨
可调螺旋桨

Mainly , the type of pump in the large - scale irrigation and drainage pumping station in our country is adjustable - blade propeller pump . we can regulate the pump ' s blade mounting angle following the variation of water level at the inlet and outlet of the station in order to control the discharge of pump , we also determine the number of running machines with machine ' s optimal combination . so we can reduce its energy consumption , and make it optimally and economically run
我国大部分大型电力排灌站所安装的泵都为可调节叶片的轴流泵，这一有利条件使我们可以根据排灌站进、出口水位的变化来调节水泵的叶片角度，控制水泵的流量，并合理的确定开机台数，通过机组间的优化组合，使整个泵站的能耗最少，达到整体最优、经济运行的目的。
An operation decision method for multi - stage pumping station system with adjustable - blade propeller pump is presented . it includes optimal water level of individual stage of pumping station and optimal operation method of every pump . the paper describes some mathematical models and decision making technique of multi - stage pumping station
本文针对大型引水工程整个系统在进入稳态运行后，在各站的抽水流量或首级站进口水位发生变化的情况下及时做出运行决策，调整各梯级站间的水位，达到整个系统总能耗最小的目的。