坚固的GIW泥浆泵具有持续水力效率，长抗磨损寿命，降低成本。
Rugged GIW slurry pumps provide high sustainable hydraulic efficiency, and long wear life at the lowest total cost of ownership.
论文利用EFDC数值模型，对人工湿地和自然湿地的水力效率进行数值研究。
This study investigates the hydraulic efficiency of constructed and natural wetlands with the EFDC numerical model.
为了提高泵的水力效率，泵壳体采用流线型设计，同时加大了壳体的通流面积。
In order to improve the water power efficiency of pump, casing applies streamline design, the circulation area is increased.
明确了这种影响主要体现在三个方面，即泵的水力效率及其动力性能和理论扬程。
It is clear that the influence has mainly three aspects, hydraulic efficiency, dynamic properties and theoretical delivery lift.
湿地水力效率就是基于水力停留时间分布来进行湿地污水净化功能评价的重要指标。
Hydraulic efficiency of wetlands is an indicator of efficiency of waste-water treatment based on the detention time distribution.
本文分析了泵及泵装置的水力损失和水力效率的关系，推求出了泵装置的最高效率工况点。
The most efficient work point of of the pump device was deduced after the analysis of the relationships between hydropower loss and hydropower efficiency in pump and pump device.
本文探讨了通过沿圆周分布不同形状的固定导叶来降低损失，以克服此种蜗壳自身的不足，提高转轮的水力效率。
Different geometry of stay vanes applied to reduce loss is discussed in the paper, so as to compensate lack of spiral casing and improve hydraulic efficiency.
实验证明通过改变叶片型线参数方程中的速度系数的取值，可以控制边界层的分离，进而改善泵的性能，提高其水力效率。
The experiment shows that by changing the velocity coefficient , the separation of boundary layer on pump vane can be controlled, and the performance of pump is improved and its hydraulic efficiency.
但是，由于该湿地水力效率并不是在入流流量恒定状态下所计算得到的，能否真实反映衡水湖的污水处理能力需要进一步的论证。
However, since the hydraulic efficiency is not obtained at a constant flow condition, whether it can represent the waste-water treatment efficiency is uncertain.
但是，由于该湿地水力效率并不是在入流流量恒定状态下所计算得到的，能否真实反映衡水湖的污水处理能力需要进一步的论证。
However, since the hydraulic efficiency is not obtained at a constant flow condition, whether it can represent the waste-water treatment efficiency is uncertain.
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