结果表明：迷宫螺旋泵扬程系数最大值随流量的增大而减小；
The analysis results show that the maximal value of the pump head coefficient declines when the flow rate increases;
指出切线泵的扬程系数与叶片数、喉部面积、集液器断面积的关系。
At the same times, the relationships of the head coefficient with the number of the blade, the throat area and the sectional area of the collector were analyzed.
随轴向间隙扩大，超小型泵的扬程系数、功率系数和效率都逐渐降低。
The head coefficient, power coefficient, and efficiency decreased with increasing axial clearance.
本文从理论和实例出发，分析了在不降低效率的前提下，提高泵扬程系数的条件。
Based on the theory and the experience, the requirements for increasing the head coefficient under the condition of maintaining the efficiency were proposed in this paper.
本文从理论和实例出发，分析了在不降低效率的前提下，提高泵扬程系数的条件。
Based on the theory and the experience, the requirements for increasing the head coefficient under the condition of maintaining the efficiency were proposed in this paper.
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