The check valve plays an important role to prevent the reverse flow in high pressure system.
止回阀在高压系统中起着关键的防逆流作用。
The Reverse Flow Diverter (RFD) is one of the key components affecting the liquid - delivered efficiency.
可逆流体换向装置是决定气动式脉冲液体射流泵的流体输送效率的关键组成部件。
Series 709 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system.
系列709双止回阀总成适用于防止受到污染的水回流进入到饮用水系统中。
RESULTS: the reverse flow were detected at the mitral valve orifice of left atrium, at the opposite of which in left atrium the front flow were also detected.
结果：在观察到二尖瓣口左房侧负向血流的同时，在其左房的相对面可测到前向性血流。
The N-shaped curve is the result of Hui merchants capital influx from farmland into salt industry and pawn broking during Jiajing era, and the reverse flow during Wanli era.
这是徽商资本在嘉靖“严肃海禁”后大量从土地流向盐业、典业，又在万历商业环境恶化后持续回流土地的结果。
By reducing the reverse flow in chamber and by increasing resistance difference of back-and-forth flow, higher efficiency, higher pressure and less output fluctuation could be expected.
通过减小腔内回流比例、增大正反方向流阻差，提高泵液效率与输出泵压、减小输出脉动。
The Soviet Union, which also produced plenty of engineer-politicians (including Boris Yeltsin), wanted to reverse the northward flow of some great Russian rivers, for example.
例如，同样涌现了许多工程师出身的政客(包括鲍里斯•叶尔钦)的前苏联曾经想要改变一些俄罗斯境内的大河由南朝北的流向。
This paper proposes a three-dimension reverse design method of blade based on turbine according to the flow parameters and revolution of pump.
提出了按水泵给定流道参数和转数，从水轮机方向计算叶型的全三维逆向设计方法。
There may be some reverse flow from cities to countryside as life in the latter dramatically improves.
当农村生活极大地提高的时候，将会有从城市到农村的逆转潮流。
Cold leg recirculation mode will provide long term cooling for the core and hot leg recirculation mode will be used alternately provide reverse flow to the core.
冷段再循环给堆芯提供长期的冷却，热段再循环用于交替地给堆芯提供反向流。
The float shoe prevents reverse flow, or U-tubing, of cement slurry from the annulus into the casing.
浮鞋能够防止环空中的水泥浆向套管内流动这种回流或者U型管效应的发生。
An anti-reverse rotation device prevents the pump from turning backwards which would increase core bypass flow and pump starting current.
止逆装置用于防止泵反转，反转将导致堆芯旁通流量增加和泵启动电流增加。
The variation of local friction coefficient is similar to velocity and local minimum value occurred in reverse flow area.
摩擦阻力的变化趋势与速度类似，在产生逆向流处出现局部极小值。
Kinetic studies of HDL particles or apolipoproteins provide information on the flow of lipids and have been used to investigate reverse cholesterol transport.
HDL颗粒的或载脂蛋白的动力学研究为脂质流动提供了信息，已经被用于研究胆固醇逆向转运。
Use a pressure reducing regulator or separate control valve to safely discharge gas from cylinders. Use a check valve to prevent reverse flow into the cylinder.
使用减压调整器或单个的控制阀来安全地从钢瓶中排出气体。采用止回阀，防止回流入钢瓶。
In this paper, the effects of diameter and air inlet on flooding and flow reverse have been studied by experiment.
通过实验研究了管径和气体入口条件对竖直管内淹没和流向反转的影响。
When the control valve when the reverse, so that both fluid along the direction of movement of spool when closed, the flow control valve capacity will be increased.
当调节阀反向使用时，既流体沿着使阀芯关闭的方向流动时，调节阀的流通能力会增大。
When the pressure difference changes with time, a phase shift will occur between the transient pressure difference and displace of valve flap, which could cause leakage and even reverse flow.
当阀片两侧的压差随时间变化时，阀片的启闭与压差的变化之间存在一定的相位差，有可能引起泄漏甚至反向流动。
The pulse type and reverse jet dust collector can obtain higher filtering speed than the oscillating and reverse air flow.
脉冲式、反向射流式除尘器能够比振荡式、反向气流式的过滤速度获得高些。
On the basis of geometric dimension and flow pattern of tangential reverse flow cyclone separators, a pressure drop mathematical model is presented through analysis of pressure drop components.
根据切向反转流旋风器的结构特性和流场特性，分析了该种旋风器的阻力构成并给出了相应的计算模型。
The acknowledgement information relating to the flow of message in one direction is embedded( piggybacked) into normal data-carrying message flowing in the reverse direction.
与一个方向的报文流有关的确认信息钳在反方向正常携带数据的报文流中。
Afloat on a boat or flotsam, they will be dragged inland with the flow until a reverse slosh begins, the water flowing back into its bed.
他们漂浮在小船和残骸上，随着水流被拖拽进入了内陆地区，接着一股相反的水流开始泼溅过来，海水又流回到了海床里。
As a result, the generating action of the induction machine will cause the power flow to reverse and the kinetic energy of the drive system will be fed back to the supply.
结果，由于感应电动机为发电机，功率流将反向，拖动系统的动能将被反馈回电网。
A float collar is placed at the top of the float joint and a float shoe placed at the bottom to prevent reverse flow of cement back into the casing after placement.
浮箍是放置于浮动接头之上的，而浮鞋则是放置于浮动接头之下，以防止水泥浆回流到套管内。
Due to the use of amine collector, the double reverse floatation flow had overcome the shortage of heating in the routine floatation of phosphorus, and its drug cost was relatively low.
双反浮选流程由于使用了阳离子胺类捕收剂，一定程度上克服了胶磷矿常规浮选需要加温的缺点，并且药剂成本较低。
The mathematics model was established based on flow characteristics of reverse flow diverters (RFD) by the using of energy equation.
针对压冲流体在可逆流体换向装置(RFD)中的流动特性，以能量方程为基础建立数学模型。
The mathematics model was established based on flow characteristics of reverse flow diverters (RFD) by the using of energy equation.
针对压冲流体在可逆流体换向装置(RFD)中的流动特性，以能量方程为基础建立数学模型。
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