查询词典 backpressure

To resolve the problem, based on backpressure test theory and superposition principle, this paper designed a new test method, named Backpressure Isochronal Test.

以回压试井理论和渗流叠加原理为基础，提出了"回压等时试井"产能评价方法，该法所需测试时间与"单点法"大致相同，但能较准确地评价低渗气井产能。

The design of integral non-backpressure piston rings was studied in order to reduce wear and to raise the piston ring life.

为了减少磨损，提高活塞环的使用寿命，对整体无背压活塞环的设计进行了研究。

The N9-CD is designed to prevent high hazard backsiphonage backflow and low-head backpressure (10ft. or less) from contaminating the potable water supply. The N9-CD is ideally suited to prevent backflow associated with hose connections and may be screwed directly to the sill cock, yard hydrant or wall hydrant.

N9-CD适用于防止高危害反虹吸回流和低压头反压力（3米以下）回流污染饮用水供应系统。N9-CD特别适合于防止软管连接有关的回流，可以直接螺旋连接到洒水龙头、庭院消防栓或墙式消防栓上。

Eliminate source of excessive backpressure or water hammer in the system downstream of the device.

B.4 在装置的系统下游内消除过于严重的反压力或水锤现象的根源。

To the problems of radial leakage caused by axial gap and axial leakage caused by radial gap, the paper discussed the changing in mechanism of axial and radial, which can solute these impactions. Analyzed the backpressure and the back-press port position of back-press technology, Which is the best used.

针对涡旋压缩机工作过程中压缩腔内产生的气体力对整机造成的轴向间隙的径向泄漏和径向间隙的轴向泄漏问题，讨论了解决这些影响的轴向随变机构和径向随变机构，对使用最多的背压技术进行了背压力及背压孔开设位置的分析。

The results show that,the boundary layer suctions can improve the maximum backpressure of the inlet,which increases the length of the isolator to some extent.

分析结果表明：采用附面层抽吸技术能够提高进气道的抗反压能力，相当于增加了隔离段的长度。

For protection against backpressure backflow, install Watts Series 909 or Series 009 reduced pressure principle backflow preventers.

对于反压力回流保护，需要安装美国瓦茨909系列或009系列减压原理防回流阀。

Domestic economy development needs reliable and steady power supply.Introduced in this article is a system technology, which adopts treated middle water as the make up water of evaporative cooling tower of the direct air-cooled power station, to reduce the backpressure of the vapor condenser and therefore to increase the maximum generation capacity, to reduce coal consumption as well as to re-use of sewage.

国民经济发展需要电力的可靠稳定供给，本文介绍了一种利用经过处理的中水，作为直接空冷电站夏季辅助蒸发式冷却塔的补水，从而实现降低空冷电站夏季凝汽器背压，提高峰荷出力，节约煤耗，同时又实现污水回用，所以是一个节能又节水的系统技术。

One method is to install a backpressure check valve in the tank line.

一个方法将安装反压单向阀在坦克线。

This paper introduces the problems in double backpressure condenser vacuum system by taking certain power plant as example,especially the circulating water with high temperature has influence on the economic efficiency of unit,put forward countermeasures to solve these problems.

以某电厂为例，介绍了双背压凝汽器真空系统存在的问题，特别是循环水水温较高时会影响机组的经济效率，并提出了解决该问题的对施。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。