velocity head coefficient 流速水头系数
velocity head coefficient west bank 流速水头系数
adiabatic head coefficient 绝热压头系数
universal head loss coefficient 通用压头损失系数
head-drag coefficient 头部阻力系数
gas head-transfer coefficient 气体热传递系数
coefficient of local head loss 局部水头损失系数
The head coefficient, power coefficient, and efficiency decreased with increasing axial clearance.
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 analysis results show that the maximal value of the pump head coefficient declines when the flow rate increases;
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；
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.
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。
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