输油泵的主要评价指标是泵效率。
The efficiency is a primary evaluating indicator for oil transportation pump.
耗电量以40%的总泵效率（液压泵加电动泵）为基础。
The electric consumption is based on an overall pump efficiency of 40 % (Hydraulic plus Electric).
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。
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.
采用径向导叶的液氢泵的试验结果表明，导叶损失大，导致液氢泵效率低。
The results, which obtained by using radial diffuser, show that due to the high loss through the diffuser, the efficiency of the liquid hydrogen pump is lower.
原泵运行约一年的时就出现振动强、轴封泄漏大、泵效率大大降低等问题，必须停机检修。
The original pump is running about a year there when the strong vibration, seal leakage, and significantly reduce pump efficiency and other issues, we must overhaul downtime.
测定泵的输入电流、电压、转速、输出流量、输出压力、泵效率等参数，通过回归推断各参数的相关特性。
The input electric current, voltage, rotary speed, output flux and output pressure of the pump were tested. The regression relation of these parameters was deduced.
输送皂角泵内有设计合理的泄油和回油槽，是齿轮在工作中承受的扭矩力最小，因此轴承负荷小，磨损小，泵效率高。
Pump is the drainage and back into the groove of reasonable design, is a gear in the work under the minimum torque force, so the bearing load is small, wear small, pump with high efficiency.
本文根据已知数据，利用MATLAB工具，采用回归方法得出了实际泵效率与铭牌泵效率的回归关系，并验证了回归模型的正确性。
According to known data, this text make use of the tool of MATLAB, apply regression method, put out the regression relation of them and verified the accuracy of this model.
试验结果表明，改变泵出口管线结构，使泵出口压力在一定范围内工作时，流量变化大，而且泵效率较高，可以作为泵调整参数的一种手段；
The test results have proved that the flow rate widely varied and the pump efficiency is high when the pump outlet line structure was altered and the outlet pressure was controlled in a special limit.
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。
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.
讨论了离心泵的运行转速改变后，由于泵效率和管路效率的变化而给整个果装置效率带来的影响，由此可以判断离心泵改变转速后，泵装置的运行是否合理，并可确定泵装置运行的最佳转速范围。
The influence of the change of centrifugal pump rotating speed on the efficiency of the whole pump-unit which due to the variation of the pump efficiency and pipeline efficiency is studied.
有四个泵结构和通路的电池比较容易制造，但其把糖转换成电能的效率仅为百分之四左右。
A cell with four pumps and channels was easier to make but only about four percent as efficient at converting sugar to electricity.
但铂材料中的气泡启发了爱迪生，他开发出一种高效率的真空泵来抽取灯泡里的空气。
But gas bubbles in the platinum had led Edison to develop an efficient vacuum pump to remove the air from the inside of his bulbs.
旋涡泵的效率一般不超过40%。
这种结构大大提高了电荷泵的效率，延长了电池的使用时间。
This structure substantially enhances the efficiency of charge pump and thus prolongs the using time of batteries.
本文为提高离心泵叶轮的设计质量及效率提供了一个新的方法。
CAD method for improving design quality and efficiency of centrifugal pump impeller is provided.
该泵具有效率高、节能显著、运行平稳、性能可靠、维修方便等优点。
The pump has high efficiency, energy-saving significantly, smooth operation, reliable performance, easy maintenance and so on.
应用结果表明了该模型的有效性和准确性，对提高其他油田螺杆泵井系统效率具有一定的指导意义。
Application of the model results show that the effectiveness and accuracy of other oil fields to enhance the efficiency of screw pump well system has a certain significance.
利用热分布次数作为热分布时间的衡量尺度，研究了单分子-光子泵的制冷效率。
The times of heat distribution was taken as time scale in investigating cooling efficiency.
泵的效率值与泵的类型、大小、结构、制造精度和输送液体的性质有关。
Pump and pump the efficiency of the type, size, structure, precision manufacturing and distribution of the nature of the liquid.
推导了电荷泵的损耗和效率模型，为电路设计中确定电荷泵开关管的尺寸奠定基础。
It is the basis of computing the size of switch transistors to derive the model of the power dissipation and efficiency of charge pump.
由于能使泵更有效率处理粘性也能挥发性液体，所需要的马力与其他泵等效。
Due to its efficiency the pumps can handle viscous and also volatile liquids and require less horsepower than other equivalent pumps.
泵的效率随轮缘处间隙变大会有明显减小。
The efficiency of pump will be reduce with the increase of tip clearance of blade.
优化后的泵淤固堤技术，经济合理，效率高，适宜在堤防加固中推广应用。
Optimized pump silting strengthening levee technique is reasonable in economy, efficient and suitable for extension and application in levee strengthening.
它不仅有很高的几何传输效率，而且还可以大大地提高泵浦的均匀性。
It has a higher geometrical transmission efficiency as well as a better pumping uniformity.
该模式有利于提高泵的有效冲程及系统效率，降低能耗。
This pumping model is suitable for enhancing the effective stroke and efficiency of pumping system and reducing the consumption of energy.
利用此规律可对螺杆泵进行优化设计，提高其工作效率。
The regularity can be applied to optimize the design of screw pumps and improve its working efficiency.
泵送系统：泵送系统性能可靠、吸入效率高。
Pumping system: with reliable performance and high-efficiency inhalation.
改造后密封效果好，密封使用寿命长，并且提高了泵的效率和运行时间。
After transformation, the sealing effect is good, the service life of seals is long, pump efficiency and running time is increased.
改造后密封效果好，密封使用寿命长，并且提高了泵的效率和运行时间。
After transformation, the sealing effect is good, the service life of seals is long, pump efficiency and running time is increased.
应用推荐