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。
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。
It is resolved that design condition efficiency for low specific speed centrifugal pump is not the highest in terms of experiential statistical area ration value.
解决泵行业一直依据经验统计值确定面积比而不能使低比转速离心泵在设计点效率最高这一问题。
Variable volume piston pump. Swash plate design allows for high efficiency and low noise.
该产品为可变容量柱塞泵。斜板的设计，高效率，低噪音。
Unreasonable selection of pump type and improper combination operation are the main causes of low efficiency and energy consuming of intake pumping station equipment.
取水泵站装置效率低、能耗大的主要原因是水泵选型和组合运行调度不合理。
The performance curves directly reflect the running status of reciprocating pump and its features; the traditional drawing method has the characteristics, a great deal of work and low efficiency.
性能曲线可直观地反映往复泵运行工况及其特性，传统的绘制方法工作量大，且效率低。
The positive vortex pump overcomes disadvantages of low efficiency, small flow and limited hoisting height of prior vortex pumps.
它克服了现有旋涡泵的低效率、小流量和扬程有限等不足。
But there are some shortage of ordinary single-stage heat pump in low-temperature environment, such as high compression ratio, devoid heating power and low efficiency.
但普通单级空气源热泵热水器在低温环境下运行中存在压缩比过大、制热量不足和制热效率太低等问题。
Variable displacement servo pump in the small variable phase, likely to cause the low efficiency of the system, heat large shortcoming.
伺服变量泵在小排量变量阶段，容易造成系统效率低、发热量大等缺点。
The AAT3177 is a high output current, high efficiency, low noise, low profile Charge Pump DC/DC converter.
AAT3177是高输出电流，高效率，低噪音，低姿态电荷泵DC/ DC转换器。
It is shown after analysis that the efficiency of roto-jet pump is higher than theefficiency of multistage pump and express pump when it operates in the region of low dis-charge and high lift.
通过对提高某化工装置反应器进料泵扬程两种方法的分析对比、实验研究，提出短叶片偏置设计法是提高低比转速离心泵扬程和效率的有效方法。
The heat pump system with flash-tank can effectively improve the efficiency and reliability of air-source heat pumps running in low-temperature environment.
带闪发器的热泵系统可以有效地改善空气源热泵在低温环境下运行的制热性能和运行可靠性。
Screw pump features are: smooth flow, small pressure fluctuation, imbibition, low noise, high efficiency, long service life and reliable operation.
螺杆泵特点是：流量平稳，压力脉动小，能够自吸，噪声低，效率高，使用寿命长，工作可靠。
In traditional charge pump circuits, the output voltage is limited with the threshold voltage, and has to use high stairs to realize. It leads to low power efficiency and large layout area.
在传统的电荷泵电路中，输出电压受阈值电压限制，不得不用高阶电路来实现，致使电路效率低下、面积大。
This paper develops a monitoring alarm system for refrigerator pump assembly line of Haier Group by consulting the research of other domains to reform the manpower mode of which efficiency is low.
我们借鉴其他领域中监控报警系统的成果，为海尔集团开发冰箱抽空流水线的监测与报警系统，以改变当前靠人工进行监测这种耗时耗力效率低下的监测模式。
To avoid attackers to dissemble the secure circuits, the design technologies of low-voltage high power efficiency fully integrated charge pump elevator are studied.
为了避免攻击者将安全电路拆卸掉，研究了低压、高效率、全集成电荷泵升压电路的关键技术。
High efficiency, low costs: Power consumption of swimming pool heat pump just spends on compressor and fan.
高效率，花费低：泳池热泵的电耗仅用于驱动压缩机和风扇电机的运转。
The utility model is capable of achieving high efficiency and low energy consumption heat generating co-operating with a heat pump assembly.
本实用新型结合热泵机组能实现高效率、低能耗制热。
Adopt an advanced circle-arc tooth; the pump is of stable operation, low noise, long service life and high efficiency;
采用先进的圆弧齿型，泵运转平稳、噪音低、寿命长、效率高；
Adopt an advanced circle-arc tooth; the pump is of stable operation, low noise, long service life and high efficiency;
采用先进的圆弧齿型，泵运转平稳、噪音低、寿命长、效率高；
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