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从叶轮流道相对速度分布导出了低比转速高速离心泵复合叶轮的设计原理，提出了复合叶轮的设计准规，并给出了叶片数的经验计算公式。按该准则设计的三台超低比转速复合叶轮高速离心泵均取得了很好的性能指标。
The design principle of high speed centrifugal pump composite impeller with low specific speed was deduced from the relative velocity distribution of impeller runner. The design criterion of composite impeller was put forward and the empirical formula of the number of blades was given. According to the guidelines designed three ultra-low speed composite impeller high-speed centrifugal pumps have achieved good performance indicators.