Under the flow for spool valve closure and relatively easy changes in fluid pressure and flow and less.
对于阀芯下流动，阀门相对地容易关闭而且流体压力和流量变化和少。
The Fluid Flow factors contained herein are calculated values. They are therefore approximations and cannot be used for highly critical flow or pressure drop calculations.
这里的液流系数是预测值。因此这些数据只是大致的数据，不能用作高流量临界值或压降估计值。
The pressure surge in fluid transmission pipeline is one of the basic characteristics of fluid dynamic flow.
流体传输管道内的压力脉动反映了流体动态流动的基本特性。
The focus of the research on the two phase flow, gas and non-Newtonian fluid in horizontal pipelines, is pressure drop, the law of liquid adhesiveness and the prediction of flow form.
水平管中气体和非牛顿液体两相流动研究的中心问题是压降和持液率的规律，以及流动型态的预测。
Swing-type check off er the least pressure drop and offer simple automatic closure; when fluid flow stops gravity and flow reversal closes valve.
旋启式止回阀压降最小，能够完全自动关闭，即在介质流动停止、重力和介质倒流的状态下自动关闭阀门。
A check valve that controls fluid flow rates to maintain a predetermined, constant pressure upstream from the valve.
为保持阀的上游的预定不变的压力所用的控制流体流量的一种止回阀。
This paper has analyzed the relationship of flow, pressure pulsation and noise in hydraulic system, and has inquired into generation and propagation of fluid noise in the system.
本文分析了液压系统流量、压力脉动与噪声的关系，对系统的流体噪声产生与传播进行了一些探讨；
The fluid surface forcing control system applied on counter pressure casting is built based on the combined digital valve as the main flow control component.
采用组合式数字阀作为主要流量控制元件，构建差压铸造液面加压控制系统。
The flow of the sealing fluid is increased and the heat of stirring is carried away by increasing the pressure of the injection sealing fluid.
而增加密封液注入压力，有利于增大密封液流量，带走更多的搅拌热量。
However, for the analysis such as solid phase stress, fluid pressure and flow velocity, the difference between two parameter configurations must be considered.
但在分析软骨的固相应力、液体压力和流动等较深入细致的问题时，两种参数设置结果之间的差异不能忽略。
The detailed distribution of pressure and velocity on the cone obtained after simulating the flow characteristics of a V-cone flowmeter with the computational fluid dynamics (CFD) method is analysed.
运用计算流体力学(CFD)方法，对V锥流量计进行了数值模拟，得到了锥体上的压力和速度的详细分布情况，并对其进行了分析。
Reversed flow is stopped or held in "check" by fluid backflow pressure which seats the closure device against the valve body.
倒流的流体通过倒流的流体压力将止回关闭装置与阀体紧密密封，从而实现阻止倒流的“止回”功能。
When bubbles flow within fluid, once the pressure arroud a bubble decreases, the volume of bubbles become smaller or collapses.
空泡在随液体流动过程中，当周围压力增加时，空泡体积将急剧缩小或溃灭。
The steady oil production and pressure distribution formulae of vertically fractured well for power_law non_Newtonian fluid were derived on the basis of the elliptic flow model in fractal reservoirs.
以椭圆渗流模型为基础，得到了分形油藏中，垂直裂缝井的幂律型非牛顿流体的定常渗流的压力分布公式和产量公式；
This valve is normally automatic work, in a direction of flow of fluid under pressure, open the flap valve;
通常这种阀门是自动工作的，在一个方向流动的流体压力作用下，阀瓣打开；
Adjustable chokes enable the fluid flow and pressure parameters to be changed to suit process or production requirements.
可调节流器可改变流体的流动参数和压力参数，以适合于处理要求或生产要求。
Fluid Energy Controls surge Stop surge Suppressors are designed to dampen the pressure surges caused by rapid closing and opening of flow control valves in any liquid handling system.
浪涌电压抑制器用以抑制关闭和开启控制阀时产生的压力波动。
The bristle assemblies give serous fluid momentum step by step to form a rotary flow and to yield filtration pressure.
针轮由小及大逐渐向浆液传递动量，启动旋流，产生离心过滤压力。
A device incorporating an orifice that is used to control fluid flow rate or downstream system pressure.
包括一个喷嘴的装置。它用于控制流体的流量或下游系统的压力。
In any fluid handling system, valves are the controlling element: starting or stopping flow, regulating or throttling flow, preventing backflow, or relieving and regulating pressure.
在任何流体处理系统中，阀门是作为控制装置：启动或停止流体流动，对流体进行调节或节流，防止倒流，或释放和调节压力。
The inertance is the tendency of the fluid to resist flow rate changes due to pressure forces.
惯性是流体阻碍由于压力而引起的流量变化的倾向。
The only power source is a hydraulic system to provide generator with required hydraulic fluid flow at demanded pressure.
驱动它运转的唯一动力是所需要的液压流量及压力。
However, even benign tumors can cause serious problems if they grow big enough to cause increased intracranial pressure or obstruct vascular structures or cerebrospinal fluid flow.
然而，即使良性肿瘤可能会导致严重的问题，如果他们长大大到足以引起颅内压增高，阻碍血管结构或脑脊髓液的流动。
The fluid pressure pulse and flow-noise in water piping system decreased the operation safety of piping system and hiding ability of submarines.
水管路系统流体压力脉动及其引起的流噪声会降低管路系统自身工作的可靠性和舰船的隐蔽性。
The introduction of ultrasonic vibration reduces the metal flow resistance and fluid pressure loss, raises the flow speed, raises the welding quality and facilitates welding of thick plates.
超声振动的引入降低金属流动阻力和流体压力的沿程损失，提高流动速度，提高了焊缝质量，也可有效解决厚板焊接困难。
Performance of mass flow controller may be vulnerable to pressure transients in a flow path to which the controller is coupled for the purpose of controlling the fluid flow.
质量流量控制器的性能可能易受在与控制流体流动的控制器耦合的流动路径中的压力瞬变现象的影响。
The results have shown that diameter, gas fraction and fluid viscosity have slight impact on flow rate of this boosting system, but have remarkable influence on pressure drop of this system.
研究结果表明，管径、含气率以及流体粘度对管泵系统的流量影响不大，而对压力降则有显著影响。
In this numerical model the fluid pressure transmission during the rupture-failure process of material is achieved by the coupling and iteration of flow-damage of an element.
在这个数值模型中，材料在开裂破坏过程中流体压力传递通过单元渗流损伤耦合迭代来实现。
This paper introduces the momentum and flow field of tiny-hole jet-flow in high-pressure homogenization processing by applying fluid dynamics.
本文应用流体力学理论分析了高压均质过程中，微孔射流内动量及流场结构。
The distribution of flow field in clearance seal with balanced-pressure grooves is calculated by using the method of computing fluid mechanics.
使用计算流体力学的方法，计算增加压力平衡槽后间隙密封中的流场分布。
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