压水室采用导叶式结构能够尽快地把液体的动能转换为压力能，同时能够使泵腔内的流动更趋合理均匀，提高泵内气液分离的能力，并且能平衡叶轮径向力。
The volute of guide-vane structure can transform the kinetic energy to pressure energy as soon as possible, and improve the capacity of separating gas and liquid for the more balance flow in it.
对大泵改造保留出口导叶的叶轮改型方案作了深入的探讨。
A reform scheme with exit guide vane remained for large axial flow pumps is discussed deeply.
叶轮和导叶是轴流泵装置中的重要过流部件，而轴流泵后导叶(以下简称导叶)是泵内动能回收的主要部件。
Impeller and diffuser are important parts in the Axial-flow pump and the later is the important part to take back energy.
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