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提出了３种新型的特殊形状的离心泵叶轮。试验表明，３种情况下均基本上消除了扬程曲线驼峰且泵性能也较理想，叶轮结构简单并可节省原材料。
Three new types of centrifugal pump impellers are proposed. Experiments show that in all three cases, the lift curve hump is basically eliminated and the pump performance is also better. The structure of the impeller is simple and the raw materials can be saved.