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从水环真空能量传递过程入手，阐述了叶轮圆周速度的物理意义，并进一步论述了叶轮圆周速度对泵效率、结构及工作稳定性的影响，从而得出了水环真空泵叶轮最佳圆周速度。
Starting from the process of water ring vacuum energy transfer, the physical meaning of impeller circumferential velocity is expounded. The effect of impeller circumferential velocity on pump efficiency, structure and working stability is also discussed. The optimal circumferential velocity of water ring vacuum impeller is obtained.