查询词典 pump

The results of research offers reliable information to improve the pump performance, and offer some theory to design the screw centrifugal pump.

研究结果对泵性能的改善与改进提供有益的信息，为螺旋离心泵的设计提供了一定的理论依据。

Single screw pump flow and pump speed is proportional to, which has a good regulatory variables

单螺杆泵流量与泵的转速成正比，因而具有良好的变量调节性

Screw pump features: the loss of small screw pump, good economic performance.

螺杆泵特点为：螺杆泵损失小，经济性能好。

Group Seven holding company , are set to design, develop, manufacture, sale and service to a variety of double, three screw pump, low pressure gear pump-driven variety of valve products in large-scale production of specialized manufacturers.

集团下属七大控股公司，是集设计，开发，制造，销售，服务于一体，以各种双，三螺杆泵，低压齿轮输油泵各种阀门为主导产品的专业化大型生产产家。

The formation sand flow is one of an important factor to effect the nonnal production of oil wells. Sand pump technology is an effective way to control the fine sand in the artificially lifted wells. Sand control pump is main tool for sand disposal.

地层出砂是影响油井正常生产的重大因素之一，排砂工艺是针对细粉砂在机采井上采取的一种防砂工艺，防砂泵是目前主要的排砂工具。

Structural improvements in reducing the pump parts with sand contact, such as probability and the probability scaling has played a certain effect, but the pump body material at all times, everywhere in the wear and corrosion can not simply eliminate the problem.

结构的改进在减少输油泵部件与砂粒接触几率和结垢几率等方面起到了一定的效果，但是泵体材料无时不在、无处不在的磨损和腐蚀问题还不能根本消除。

Effects and from the active sand pumping operation in the pump barrel and plunger between the low friction coefficient high wear resistance and low suction resistance of view poor condition of the pump in the mine with long life.

合理的下井工艺在开发研制新结构抽油泵的同时，试行了两种下井工艺。

BW series stainless steel heat pump, glue pump for the transmission is under constant temperature thickened and solidification and maintain a certain temperature or crystallization and easy flow of medium and design, such as asphalt, paraffin and rosin, crude oil, resin and properties of similar liquid, no more than 300 degrees Celsius temperature.

BW 系列不锈钢保温泵、热熔胶泵是为输送常温下变稠、凝固或结晶而维持一定温度又容易流动的介质而设计的，如沥青、石蜡、松香、重油、树脂及性质类似的液体，温度不高于300℃。

Through analysis of the hydraulic shock produced in the course of reversing of the reversing valve used in the cylinder pump circuit pump, the paper shows that this hydraulic shock in the return oil pipe in the hydraulic cylinder is the result from the mutual effect due to the oil inertial force and the loading inertia force.

通过对泵—缸式液压回路在换向阀换向时产生的液压冲击的分析，表明液压缸回油管路中的液压冲击是由油液的惯性力和负载的惯性力共同作用的结果，在此基础上提出了液压缸回油管路中液压冲击的增压压力计算公式，结果可为液压系统和管路的防振减噪设计提供参考。

Differential pressure control point of control: heating pipe network because of distance, signal transmission is not easy to achieve, or achieve a higher cost, the use of calculated values converted to the main circulating pump import and export; or in the pressure control point for backwater install pressure gauge, pressure gauge reference value to adjust the import and export of the main circulating pump pressure.

压差控制点处压差的控制：由于供热管网距离较远，信号传输不易实现或实现成本较高，采用计算值折算到主循环泵进出口；或在压差控制点供回水管安装压力表，参考压力表数值调整主循环泵进出口的压差。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。