查询词典 back pressure

It is free of the affect of the back pressure and can perform well under high back pressure.

不受背压的影响，在高的背压下能很好地工作。

Excessive formation back pressure may be due to limited or plugged perforations; subsurface or surface chokes; undersized gas-oil separator, flowlines, tubing, or casing; or excessive back pressure on flowline, casinghead gas gathering system, or gasoil separator.

183u 译文：过高的地层回压也许是由于有限的或堵塞的射孔孔眼；井下或地面油嘴；尺寸不足的气液分离器，流动管线，油管或套管；流动管线，套管头气体集输管线或气，油分离器上过高的回压。

The constant back pressure cavity with papilionaceous slot is found to be of good economy and reliability by means of analyses for various back pressure cavities.

通过几种形式的背压腔结构分析，认为带蝶形槽的准恒定背压腔结构具有较好的经济性及可靠性。

In pressure of influence underbalanced drilling,such as drilling fluid column pressure,annulus pressure,underbalance pressure,wellhead back pressure and formation pressure etc.,the formation pressure is basic pressure.Because all pressure calculations are built on the basic pressure.

认为在影响欠平衡钻井的钻井液静液柱压力、环空压耗、欠压值、井口回压、地层压力中，地层压力是首先要搞清楚的最基础的压力，最好先求出地层压力而不必急于进行欠平衡钻进，因为一切欠平衡的压力计算都是建立在这个基础压力之上的；再根据地层压力确定合理的欠压值，确定所用的钻井液密度。

Results indicate:(1) The newly developed simulation technology can form fairly average and easily controllable back pressure downstream the inlet, so it can he used to investigate the back pressure characteristics of hypersonic inlets.(2) By regulating the valve of injection pipe, the simulation technology can realize the switch of hypersonic inlet started state and unstarted state in about 8 milliseconds, so it is suitable to investigate the starting/unstarting/resarting problem of hypersonic inlets.

结果表明：(1)所提出的凹腔喷流技术可在进气道下游形成较为均匀的、可控的背压环境，因此可用于进气道的反压特性研究；(2)适当调节凹腔的喷流总压，并在实验中实时控制阀门的开度，凹腔喷流技术能够在较短的风洞实验时间内（约8s）实现进气道起动、不起动、再起动流态之间的切换，因此可用于进气道的不起动／再起动特性研究。

If the back-pressure valve counter-export access, back pressure will grow exponentially, bringing harm to the system and may be dangerous.

若背压阀进出口接反，背压将会成倍增加，给系统带来危害并可能发生危险。

And pulsation damper used simultaneously, the pulsation damper to be an in between pumps and back-pressure Bellows Seal Valves valve in order to absorb the pump and back-pressure valve between the flow peak.

与脉动阻尼器同时使用时，脉动阻尼器应安在泵与背压阀间，以吸收泵与背压阀间的流量峰值。

On the back-pressure DIN Y-Strainers valve prior to any maintenance, equipment operation should be stopped, release the pressure, close the back pressure valve valve associated with the system, while recognizing that there is no pressure pulsation damper.

对背压阀进行任何维护以前，应停止运转设备，释放压力，关闭背压阀与系统相联的阀门，同时确认脉动阻尼器内没有压力。

Warning: The back-pressure valve prior to any maintenance, should stop functioning equipment, the release of pressure, Plug Valves close the back-pressure valve valves associated with the system, while recognizing that there is no pressure pulsation damper.

警告：对背压阀进行任何维护以前，应停止运转设备，释放压力，关闭背压阀与系统相联的阀门，同时确认脉动阻尼器内没有压力。

Committed to binding equipment products: ZYH660D folding machine, JBT50/3D4D oval Adhesive Binding of the package, JBT50/3A Oval package this machine, JBT50/4A Oval package this machine, JBB51B Adhesive Binding of the package, DQ440B riding a semi-automatic Ma Ding Shuji, TD102 single wire Ding Shuji, DH11-AB Ding Shu-box set, YP-608/808-mechanical-pressure core of the machine, NB-60 automatic stick-back, small high-performance back-Nien , SX-01 line-lock, DK-2 automatic drilling machine, DK-4-drilling machine, back-pressure.

致力于装订设备系列产品：ZYH660D折页机，JBT50/3D4D椭圆胶订包本机，JBT50/3A椭圆型包本机，JBT50/4A椭圆型包本机，JBB51B胶订包本机，DQ440B半自动骑马订书机，TD102单头铁丝订书机，DH11-AB订书订盒机，YP-608/808型机械书芯压平机，NB-60型自动粘背机，小型高性能粘背机，SX-01锁线机，DK-2型自动打孔机，DK-4型打孔机，压背机。

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。