Because of its excellent part load efficiency, many compressor unit is used mainly in the occasions for large displacement in high pressure piston compressor applications.
由于其出色的部分负荷效率，多压缩机机组主要应用于的场合为大排量中高压活塞式空压机应用领域。
However, the greater the displacement of the input shaft axis from the crown wheel axis, the lower the mechanical efficiency.
然而，更大的车轮从冠轴输入轴轴线位移，机械效率降低。
Third, in order to calculate microscopic sweep efficiency in pore models, we define sweep boundary of displacement fluid, and determine it by velocity method.
第三，为了计算孔隙模型的微观波及效率，本文给出了驱替液波及边界的定义，并采用速度法确定其在流场中的位置。
Mechanism of low interfacial tension system increasing oil displacement efficiency is analyzed based on microscopic oil displacement experiments.
通过微观驱油实验结果分析低界面张力体系能够提高驱油效率的机理。
Decreasing interfacial tension or enhancing the viscoelasticity or displacement velocity is favorable to increasing the displacement efficiency of oil film.
降低界面张力、增强驱油剂的黏弹性、增加驱替速度，有利于提高驱替残余油膜的驱替效率。
On the basis of seepage flow mechanics, the impact of displacement rate on enhance oil recovery efficiency in different types of reservoir was investigated.
从渗流力学的基本规律出发，对几种不同类型储层驱替速度对提高油气采收率的影响进行了理论探讨。
On the basis of a large number of field test data, the regression of the displacement coefficient and system efficiency for pumping unit wells were established.
本文在抽油机井大量现场测试数据的基础上，建立了抽油机井系统效率、排量系数这两个重要指标与诸影响因素之间的回归方程。
How to improve cement slurry displacement efficiency and cementing quality are cementing successful key of the well.
如何提高水泥浆顶替效率及固井质量是该井固井成功的关健。
A compounded system mainly composed of petroleum sulfonate was developed and then an oil displacement efficiency experiment was carried out.
通过大量的室内实验，研制出以石油磺酸盐为主剂的复配体系，并开展了驱油效率实验。
Compared to secondary recovery, it improves the sweep volume and efficiency of oil displacement by the AIDS of physical and chemical dual effect.
与二次采油相比，它借助物理和化学的双重作用，提高驱油的波及体积和效率。
Measures the ventilation efficiency of the displacement ventilation systems for an office room, an assembly room and a gymnasium.
对办公室、会议室及体育馆置换通风系统的通风效率进行了实测。
In the process of displacement of oil by polymer solution, the viscosity and viscoelasticity of polymer solution are vital to displacement efficiency.
在聚合物驱油过程中，聚合物溶液的粘度和粘弹性对提高驱油效率起到了至关重要的作用。
Discusses correlations between ventilation effectiveness and air distribution, analyses why the ventilation efficiency of mixing ventilation is lower than that of displacement ventilation.
讨论了通风有效性与空气分布特性的相关性，分析了混合通风（上送下回）通风效率低于置换通风效率的原因。
This system realizes the automation of pressure displacement detecting with high precision and speed, helps reduce the workload of workers, and promote the efficiency and increase economic benefit.
该系统实现了压下位移量检测自动化，检测精度高，速度快，减轻了工人的劳动强度，提高了工作效率及经济效益。
The efficiency of the positive displacement type which is more used in desalination plants now is as high as 90% or above. It has become a research focus of this field.
正位移式能量回收效率高达90%以上，目前在淡化市场上被较多采用，也成为研究的重点和热点。
The displacement efficiency of xanthan gum solution was low, when its concentration was lower than the overlap concentration.
在浓度低于缠结浓度时，黄原胶溶液的驱油效率很低。
The oil displacement efficiency of the ASP combinational flooding solution of varying alkaline concentration used at Daqing is studied experimentally.
实验研究了大庆油田所用ASP三元复合驱替液的驱油效率与碱浓度之间的关系。
The relative average error between predicted oil displacement efficiency and actual value is 8.7%, the accuracy meets demand of production.
驱油效率实际值与预测值平均相对误差8.7%，精度满足生产要求。
In addition, using the relationship among recovery percent, displacement and volumetric sweep efficiency, the equations for estimation of the volumetric sweep efficiency and.
利用采出程度、驱油效率和体积波及系数三者关系，给出了体积波及系数与可采储量采出程度的计算公式。
The sweep efficiency and oil displacement effect of polymer flooding in seven spot and five spot patterns for single and multizone reservoirs were simulated by numerical simulation.
用数值模拟研究手段对七点法井网、五点法井网以及单油层、多油层聚合物驱的波及系数及驱油效果进行了模拟；
The mechanism and the extent of action of polymer solution's depleted layer effect and viscoelastic effect on displacement efficiency and sweep coefficient.
通过聚合物溶液在不同模型中的驱油实验，研究了聚合物溶液的衰竭层效应和粘弹性效应对驱油效率和波及系数的作用机理和作用程度。
The effect of polymer solution on improvement of oil-displacement efficiency in high permeability layer is better than the effects in medium and low permeability layer.
聚合物溶液在模型高渗透层内提高驱油效率作用的效果要好于中、低渗透层。
Before it the removal efficiency of copper increases rapidly as the increase of displacement time, but after it slowly.
在该转变点前铜的去除率随置换时间增加迅速增加，以后则增加缓慢。
This paper calculates, analyses and determines the pressure point of maximum of ouput power and saving-energy efficiency of differential pressure and Limited pressure variable displacement pump.
本文计算、分析、确定了限压式变量系和差压式变量泵输出功率最大值和节能效率最大值的压力点；
Cost of water injection is reduced and oil displacement efficiency is improved by converting water drive to expansion drive.
将水驱转换为弹性驱，降低了注水成本，提高了驱油效率。
When polymer relative molecular mass and its distribution width are the same, the polymer displacement efficiency increases with the increment of the core permeability variation factor.
当聚合物的相对分子质量及其分布宽度相同时，随着岩心渗透率变异因数的增大，其聚合物驱采收率也随之增加。
On the basis of a large number of field data, the regression equations of displacement coefficient, down-hole power loss and surface efficiency for pumping wells are established.
本文以大量的现场测试数据为基础，建立了抽油机井排量系数、井下功率损失及地面效率的回归方程；
In multilayer heterogeneous reservoir, the interlayer difference would lead to nonuniformity of injection profile and influence water displacement efficiency.
对于多油层非均质油藏，层间差异会导致吸水剖面不均匀，影响水驱效率。
In the evaluation of displacement efficiency of water flooding and watered out degree, oil saturation of reservoirs must be studied.
油田注水驱油效果以及水淹程度评价中，都需要研究储层含油饱和度的变化状况。
In the evaluation of displacement efficiency of water flooding and watered out degree, oil saturation of reservoirs must be studied.
油田注水驱油效果以及水淹程度评价中，都需要研究储层含油饱和度的变化状况。
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