动力泵

Water vapor as a dynamic medium, the formation of a vacuum jet pump is an important field.

用水蒸汽作为动力介质的喷射泵形成真空是一个重要应用领域。

The jet pump to water vapor as the main driving force media.

在喷射泵中主要以水蒸汽作为动力介质。

Using products as a dynamic medium steam jet pump operating range is another important material in the process does not allow mixing of the water.

采用产品蒸汽作为动力介质的喷射泵的另一重要操作范围是在工艺物料中不允许混入水。

Through the analysis, formulae for the power cycle efficiency of liquid propellant rocket engines are set up.

一、引言液体火箭发动机动力循环的概念是涡轮泵输送系统中涡轮工质的能量转换过程。

ABSTRACT The variable displacement pump is a major element in hydraulic volume control system.

变量泵是液压容积控制系统中的主要动力元件。

In addition, belt drives are waterproofed, as are the alternator, air conditioning compressor, power steering pump and starter motor.

此外，皮带驱动器的防水处理，以及发电机，空调压缩机，动力转向泵和起动电机。

The unit adopts variable displacement hydraulic pump, hydraulic cylinder, movable pulley and broad belt to transmit power,has the charecteristics of abundant recovery and full use of power,minor fluctuation of electric motor load, low height of the unit, long stroke length and convinence of adjusting the stroke length and pumping speed, can realize the performance of being fast on the upstroke and slow on the downs...

该液压抽油机采用变量液压泵—液压缸—动带轮及宽胶带传递动力，具有功率回收利用充分、电动机负载波动小、整机高度较低、冲程长、冲程和冲次调节方便等特点，可实现上快下慢的工作状态，并具有失载与过载保护功能，是一种结构简单、重量轻、能耗少、载荷大的新型长冲程液压抽油机。

Biogas has an octane rating of between 120 and 140 which means a lot more motive power than your average premium pump gas.

沼气具有辛烷值在120和140这意味着更多的动力比您的平均溢价泵气。

If so, it could be that your power steering pump has failed.

如果是这样，可能是您的动力转向泵已告失败。

Studied pumping well system in this article, the intermediate power transmission parts uesed flexible rod, the downhole assembled rod pump, the ground driving device would transform up and down reciprocating motion into rotating motion. With own mechanism rounded trip for the downhole flexible rod and pump. Wellhead polished rod changed common stell for flexible polished rod. It was a innovation in theory study and craftwork method. It was a remarkable feature in this article, because these innovations were not studied and attempted for prehuman.

本文所研究的抽油系统，中间动力传动部件采用柔性抽油杆，井下配套杆式抽油泵，其地面驱动装置将传统抽油机驴头的上下往复运动变为旋转运动，并且能够利用自身结构对井下柔性抽油杆及泵体实现起下作业，井口光杆也由普通钢质光杆变为柔性光杆，这是理论研究和工艺方法的创新，这些创新都是前人所没有研究和尝试的，是本文的一大显著特点。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。