Vortex pump efficiency of less than 40%.
旋涡泵的效率一般不超过40%。
Gas-cut mud decreases the mud pump efficiency.
气侵泥浆降低泥浆泵的效率。
The electric consumption is based on an overall pump efficiency of 40 % (Hydraulic plus Electric).
耗电量以40%的总泵效率（液压泵加电动泵）为基础。
Immersible degrees in oil Wells with low pump efficiency were adjusted by using the relation curves.
利用该关系图对泵效低下的油井沉没度进行调整，取得了较好的效果。
It is proved with the example that the new method works well for water pump efficiency characteristic curve fitting.
实例计算表明，采用该方法可以较好地拟合水泵效率特性曲线。
Downhole gas separator is designed to reduce impacts of gas on oil pump and improve pump efficiency.
为了减少气体对泵的影响，提高抽油泵泵效，设计了井下复合式气锚。
This will increase the pump efficiency, energy saving, to avoid electrical overload operation, to extend the service life.
这样可提高电泵工作效率，节电，避免电机超负荷作业，延长使用寿命。
Purpose To deepen the entrance depth of pump in horizontal well so as to increase submerge degree and improve pump efficiency.
目的加深抽稠泵在水平井中的下入深度，以增加沉没度，提高泵效。
The gas will effect the pump efficiency of deep well-pump, if the amount of the gas of oil well is large, even gas locking occurs.
如果油井产出气量较大，则这些气体对深井泵的泵效将产生很大影响，严重的井甚至发生气锁。
A forced-closing-and-opening plunger pump is developed to solve the problems of gas lock and sand inflow and low pump efficiency in steam injection Wells.
针对辽河油田蒸汽吞吐油井存在气锁、出砂、后期油稠泵效降低的状况，研制了强启闭柱塞抽油泵。
The pump efficiency of 32% rod pumped Wells in Erlian Oilfield is lower than 30%, and increasing production centralizer is introduced to solve this problem.
二连油田有32%的抽油机井泵效低于30%，为此有针对性地引进了增抽扶正器配套工艺。
Due to structure needed, Anti-impact stroke is one of the important factors that have great influence on the pump efficiency of high-gas-contained oil well.
由于结构需要，抽油泵的防冲距是高含气井中影响泵效的重要因素之一。
There is an urgent need to understand the internal flow slurry pump to improve the design methodology, improve pump efficiency and reduce pump wear and tear.
因此迫切需要了解渣浆泵的内部流动规律，改进设计方法，提高泵的效率，减少泵的磨损。
The PCF can be used to improve the pump efficiency of EDFAs because its power confinement factor is higher than that of the conventional erbium doped fibers.
结果表明，光子晶体光纤单模工作波长范围比较宽，功率限制因子比较高，可用于制作更高抽运效率的光纤放大器。
The results show that available power and power input of water pump continuously decline with motor frequency reducing, and pump efficiency also decrease at the same time.
结果水泵有效功率和输入功率均随着电机频率的下降而不断降低，同时水泵效率也随着频率下降而降低。
This of those includes description to the variations of the pump efficiency, motor efficiency and variable frequency drive (VFD) efficiency at the reduced load conditions.
这其中包括了对部分负荷下泵效率、电机效率和变频器效率变化的说明。
The results show that the improvement of the slant improved oil-well pump 's internal structure and the optimization of the materials are the main factors to improve pump efficiency.
研究结果表明改进型斜井泵的内部结构的改进和材质的优选是泵效提高的主要因素。
In this range of air-water ratio the flow rate of mixture slightly decreased, the axial power increased linearly and the pump efficiency increased parabolically with a rise in effective head.
在稳定工作区范围内，不同的含气量条件下，随着排出压头的增加，混合液总量稍有下降，轴功率直线上升，效率呈抛物线变化。
The experiments on different types of impeller are done by changing the clearance of wear-ring to prove that the clearance has no influence on the pump efficiency under various types of impeller.
通过改变叶轮口环间隙的大小对不同叶片型式的低比转速离心泵进行试验，证明口环间隙对低比转速离心泵效率的影响与泵叶轮的叶片的型式无关。
As there isn't much change room for head and motor efficiency, we have to take measures to increase pump efficiency and brine salinity to decrease the electricity consumption for brine extraction.
而扬程和电机的效率均无多大变化空间，要使采卤电耗较低可从提高泵的效率和卤水的含盐量方面来想办法。
Pump efficiency was increased by 6%.
其泵组效率比原泵提高6%。
Pump efficiency was increased by 6%.
其泵组效率比原泵提高6%。
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