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.
基于加大流量设计法，采用增加分流叶片和增大喉部面积等措施，研制了高效区宽离心泵。
The centrifugal pump with wide efficient range is developed based on the maximum flow design method.
通过大量冷态试验，在大范围变化工况、变化喉部面积及变化背压条件下，利用水对低温流量控制系统进行研究，得到了流量系数、压力恢复系数的变化规律。
And water is used in cold test. Through changing operating conditions, throat area and back pressure, the change rule of discharge coefficient and pressure recovery factor were found.
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