... throttling loss 节流损失 Throttling Curve 扬程曲线 throttling screw 节流螺杆 ...
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表明计算所得流量-扬程曲线与实测值吻合良好；
The result demonstrates that the computational head versus discharge curve is coincident with the measuring curve;
本实用新型的优点是既能 满足水泵流量-扬程曲线平坦，又能保证泵的效率。
The utility model has the advantage that the utility model not only satisfies the pump flow, namely that the head curve is smooth, but also ensures the efficiency of the pump.
从性能上讲，该叶轮效率较低，仅相当于普通闭式叶轮的70%左右，扬程曲线比较平坦。
From the performance perspective, the lower the efficiency of the impeller, the impeller is only equivalent to an ordinary closed around 70%, a relatively flat head curve.
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