However, the pumping efficiency of the heart may improve over time.
不过，抽水效率的心脏，可以改善以上的时间。
The utility model relates to an air compressor, which is used for improving air aerating efficiency or air pumping efficiency.
本实用新型涉及一种空气压缩机，使之提高充气或抽气效率。
In order to reduce the influence of gas on pumps and improve the pumping efficiency, a combined downhole gas-liquid separator is developed.
为了减少气体对泵的影响，提高抽油泵泵效，研制了井下复合式气液分离器。
Discusses the relationship between pumping speed and inlet pressure of an oil-sealed mechanical pump and the reason why its pumping efficiency drops down.
该文介绍了油封机械泵的抽速与入口压力的关系、泵抽气效率下降的原因，指出泵入口管道的流导和油蒸汽逆流是造成泵抽速下降的主要原因。
With appropriate choice of laser medium parameters, high pumping efficiency and good pump uniformity can be obtained for corner-pumped composite slab lasers.
通过选择合理的激光介质结构参数，角泵浦方式也能得到高的泵浦效率、较好的泵浦均匀性和激光输出。
The mechanism for improving the pumping efficiency with the technique is analyzed. Design procedures are proposed for the lifting string of fluid assistance.
分析了助流举升技术提高泵效的机理，提出了助流举升管柱的设计步骤。
Because the adopted N layers of rare-earth ion-doped ring-core optical fibers exist in a common central cladding region, the pumping efficiency is greatly improved.
由于采用的N层掺稀土离子环芯光纤存在一个共同的中心包层区，因此极大提高了泵浦效率。
The full-automatic vacuum box has the advantages of simple and reasonable structure, safe and convenient operation, high vacuum pumping efficiency and wide range of applications.
其结构简单合理、操作安全方便、抽真空效率高、适用范围广。
The basic mathematic model of the output of hydraulic piston concrete pump was described in terms of its working principle, the influence on real-time pumping efficiency was analyzed.
首先根据液压活塞式混凝土泵的工作原理，阐述了混凝土泵排量的基本数学模型，指出模型中的实时泵送效率是解决问题的关键。
In order to prevent the topside valve housing of the plunger from breaking and increase the pumping efficiency, we analysed the texture and material of the original and find its failure.
为了防止抽油泵柱塞上凡尔罩断脱，提高抽油泵泵效，对原抽油泵柱塞上凡尔罩结构及材质进行了分析。
The utility model has simple structure, good technics, large flow, high oil pumping efficiency and a strong universality, which can be installed and used of the 70cc-250cc types of motorcar engines.
本实用新型结构简单、工艺性好、流量大、泵油效率高、通用性强，70CC- 250cc型号的摩托车发动机都可安装使用。
Increased efficiency in the use of water and wind helped with such tasks as pumping, milling, or sailing.
提高水和风的利用效率有助于抽水、碾磨或航行等工作。
The system efficiency is a primary index for evaluating pumping system. The quality of measured parameters has a great influence on the efficiency of pumping system.
系统效率是抽油机装置的主要评价指标，测量参数的质量对系统效率测算结果准确程度的影响很大。
It has a higher geometrical transmission efficiency as well as a better pumping uniformity.
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。
General beam pumping system should be the overall efficiency of about 50% if less than this should improve its performance.
一般游梁式抽油系统的总效率应为50%左右，若低于此应提高其性能。
This pumping model is suitable for enhancing the effective stroke and efficiency of pumping system and reducing the consumption of energy.
该模式有利于提高泵的有效冲程及系统效率，降低能耗。
The optimal hydraulic design can effectively improve the outlet flow pattern of suction box to ensure better flow conditions for pump and raise the efficiency of pumping system substantially.
进水流道水力设计优化可有效地改善进水流道出口流态，确保水泵有良好的进水条件，大幅度提高水泵装置效率。
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。
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；
Pumping system: with reliable performance and high-efficiency inhalation.
泵送系统：泵送系统性能可靠、吸入效率高。
In order to raise the couple efficiency of pumping double cladding fiber laser, the beam is reshaped with rectangular prisms, spatial filtered and focused with aspheric lens.
为了提高双包层光纤激光器泵浦光的耦合效率，对泵浦光采用直角棱镜组进行了光束整形、空间滤波、非球面镜聚焦。
Pumping station integrated automation system was a system which integrates control, protection, running and management, it could greatly improve the efficiency of pumping station.
泵站综合自动化系统是集控制、保护、运行与管理于一体的系统，它可以大大提高泵站的效率。
The power efficiency of MOS charge pumping circuit is becoming one of the most important issues as the power supply decreasing continuously and the area of a chip.
随着电源电压的不断降低和芯片面积的不断减小，电荷泵的效率已成为MOS电荷泵电路设计过程中最为人们关心的问题之一。
The rod pumping is the predominance mechanical recovery mode in world petroleum production, the system dynamical simulation is the base of system efficiency analysis and optimum design.
有杆泵抽油是世界采油工程中一直占主导地位的机械采油方式，系统动态模拟是系统效率分析和优化设计的基础。
To solve the problems of low efficiency and high power consumption and inconvenient parameter adjustment of beam pumping units, a motor-reversing type pumping unit is developed.
为了解决游梁式抽油机效率低、能耗高和调整参数复杂等问题，研制开发了电动机换向智能抽油机。
The paper gives brief calculation and analysis for the artificial well efficiency, which aims at the optimization design for pumping unit and for reference.
文章仅对抽油机井系统效率进行简单分析与计算，旨在为优化设计抽油机运行参数提供参考。
Accurate calculating of the effective horsepower of pumping unit is the key to calculating the pumping unit system efficiency.
正确计算抽油机井的有效功率是计算抽油机井系统效率的关键。
Pumping collected water from mining area is the job of drainage system in pumping house under mine, which has closely relations to mining security and efficiency.
井下水泵房排水系统担负着整个矿井积水排除的任务，其安全可靠性直接影响矿井生产的效率和安全。
Designed to handle viscous fluids, these rugged pumps provide high efficiency, pulse-free pumping over a wide spectrum of applications.
这些坚固的泵设计用于处理粘性液体，可在各种应用中提供高效、无脉冲的泵吸。
Designed to handle viscous fluids, these rugged pumps provide high efficiency, pulse-free pumping over a wide spectrum of applications.
这些坚固的泵设计用于处理粘性液体，可在各种应用中提供高效、无脉冲的泵吸。
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