查询词典 pump

This paper introduces the research results of techniques of testing PC pump oil well through one-year efforts. Which covers the mathematical models of a number of force characteristics strength analysis, and resonance critical problems of rotation rod-string in PC pump wells: resulting of testing method of polish-rod load and rotation rate on the basis of feasible demonstration and technical requirement analysis; study and manufacture of system of testing PC pump well, which involves sensor, collector ring, acquisition circuit and computer; research and determination of assistant technology of testing force on rotation polish-rod and formulation of testing force on polish-rod. A spot testing has been carried out by means of the above research fruit and good results have been achieved.The success testing results in has laid a strong foundation for the oil well diagnosis.

本论文介绍了对螺杆泵采油井的研究成果，其内容包括，对螺杆泵采油井中的旋转杆柱的若干受力特征、强度分析方法及共振临界问题进行数学建模；在可行性论证和技术需求分析的基础上，研究产生了对油井进行光杆负载和旋转速度测试的办法；研究制作了螺杆泵采油井测试系统，它包括传感器、集流环、采集电路和计算机等；研究确定了对实施旋转光杆测力的辅助工艺；制定了对光杆受力进行测试作法，利用以上研究成果实施了现场测试，并取得了理想的结果。

In your reviewing the technical value of the quadruplex pump please consider that this unit is equipped with four pulsation dampeners on the discharge side allowing the pump to achieve a uniformity at least comparable with that of a triplex pump.

当考虑四泵头的泵的技术价值时，请注重到这一装置在出口侧装有四个脉冲缓冲器，这就可以使泵达到平稳的操作，至少是可以同三泵头的泵相比。

Utilizing low cost P-sub N-well process and compound device, we propose a novel high power efficiency all-PMOS charge pump which has the advantages of four phase Dickson charge pump and Doubler charge pump.

最后，基于廉价的P衬N阱CMOS工艺，综合四相位Dickson电荷泵和Doubler电荷泵的优点，采用复合开关管技术，提出了一种新颖的、高效率全PMOS电荷泵升压电路。

Current-limiting valve is mainly used for multi-pump units in parallel with changes in the way the number of traffic conditioning system, installed in the pump exports, from restrictions on water pump flow, stable head.

限流止回阀主要用于多泵并联采用改变台数的方式进行流量调节的系统中，安装在水泵的出口，起限制水泵流量，稳定扬程。

Can be seen, no overload is the essence of the centrifugal pump, pump shaft power curve peak, or shaft power with the increase of flow rate changes are small, relatively flat power curve that axis, so that the pump shaft power in the dead lift off to zero head (that is, from zero flow to maximum flow rate) are less than equal to the original context of the supporting motive power.

可见，无过载离心泵的实质是指，泵的轴功率曲线有峰值或轴功率随流量的增加而有较小的变化，即轴功率曲线比较平坦，使泵的轴功率在关死扬程到零扬程范围内都小于等于原动机的配套功率。

Through in the practice feeling about divulgement, vibration and synthesis operational performance of the pump and life of the key components and the pedestal and intact operating horary inside contact in whole set, try to look for one kind of reasonable and economical corrosion resisting stainless steel material of the pedestal and pump body,in the hope prolonging ZA200-315A and HC200-250A type stainless steels acid resisting pump whole set operation life.

通过实践摸索泵的泄漏、振动及泵综合使用性能和关键部件的寿命、底座寿命与整机完好运行时间的内在联系，试图寻找一种合理经济的耐腐蚀不锈钢底座及泵身材质，以期延长ZA200—315A型及HC200—250A型不锈钢耐酸泵的整机运行寿命。

Grease pump, oil pump, air operated greaser, air operated oil dispenser, grease gun, hand operatal grease/oil pump, waste oil drainer.

8D11 气动黄油泵，气动稀油泵，气动黄油加注机，气动润滑油加注套件，高压黄油枪，手动黄油机／齿轮油加注机，废油抽取机。

For those slurry pump with expeller seal combined with packing or packing seal, the shaft together with impeller should be able to be rotated along pump rotation direction by hand. Otherwise the impeller clearance should be adjusted (For those slurry pump with mechanical seal, adjust the impeller gap first, then mechanical seal).

对于填料加付叶轮组合式密封或填料密封式渣浆泵，用手按泵转动方向转动轴，轴应能带动叶轮转动，不应有摩擦，否则应调整叶轮间隙(对于机械密封式渣浆泵，应先调整叶轮间隙，再调整机械密封)。

For those slurry pump with expeller seal combined with packing or packing seal, the shaft together with impeller should be able to be rotated along pump rotation direction by hand. Otherwise the impeller clearance should be adjusted (For those slurry pump with mechanical seal, adjust the impellergap first, then mechanical seal).

对于填料加付叶轮组合式密封或填料密封式渣浆泵，用手按泵转动方向转动轴，轴应能带动叶轮转动，不应有摩擦，否则应调整叶轮间隙（对于机械密封式渣浆泵，应先调整叶轮间隙，再调整机械密封）。

Mobile agricultural fire pump Mobile agricultural fire pump According to the weak economic foundation of rural fire prevention facilities at this stage, based on the actual weak, the multi-functional fire-fighting facilities, agricultural economic, practical, starting from the high-pressure pump, agricultural diesel engine, fire mains Reel assembled through a fixed pulley implementation-driven, to ensure the effectiveness of fire fighting work and persistence.

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The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。