This problem becomes more critical if the valve is equipped with a restrictive flow orifice.
如果阀门配备有限制流速孔，这个问题就变得更加关键。
Orifice plates are the second choice for general duty flow measurement where vortex meters or other types of meters are not suitable or where redundant measurement is required.
在涡流表或其它类型的仪表不适合的普通用途的流量测量，或要求冗余测量的地方，孔板是第二选择。
The parameters of flow field after each orifice plate have been got by using computer.
利用计算机实现多极节流流场参数的分析。
Steam flow measurement is achieved by the use of a calibrated orifice plate and differential pressure transducer.
蒸汽流量的测量是通过用一个可测量孔口直径的压力传感器来实现的。
The material selection and airflow measurement of the standard constant flow orifice were described.
同时还对标准恒流孔的材料选择及流量测量进行了论述。
From the flow signal generated by orifice to the display on flow totalizer, the multiple conversions of signals are dissected directly perceived through four quadrants signal conversion diagram.
从流体经过孔板产生信号出发，到在流量积算仪上显示流量，用四象限信号转换图直观地剖析了信号的多次转换，重点阐明了其中的非线性转换。
It's no coincidence that orifice plates are still the most popular flow technology.
这不是偶然的孔板仍然是最流行的流技术。
An analysis is made in the paper of the factors affecting the accuracy of the ZKL intelligent orifice plate flowmeter in flow measurement.
本文主要分析了ZKL智能孔板流量计测量流量时影响测量精度的主要因素。
An endless flow of word stream from the same orifice.
一连串滔滔不绝的话都是同一张嘴巴讲出来的。
By means of formula of orifice come out, Bernoulli equation, formula of discharge along way and law of lose, general group of equation of discharge flow was established.
运用孔口出流公式、伯努力方程、沿途泄流公式及损失规律，建立了泄流管路的通用方程组。
An orifice plate is often used to restrict and measure gas flow.
通常情况下采用孔板节流、测量气体流量。
A test rig for testing the flow characteristics of ball orifice is introduced. Experiments on the flow characteristics of ball orifices with different structure parameters are carried out.
介绍了球阀阀口流量特性试验装置，对水压球阀在不同结构参数下的流量特性进行了试验研究。
A new diffuser which is impingement inlet plus uniform flow orifice was proposed in this paper.
本文提出了一种新型布水器——冲击入口加均流孔板型布水器，设计简单，易于推广。
The method of measuring is important to the measurement of natural gas flux for an intelligent orifice plate flow totalizer.
对于天然气计量用的智能孔板流量积算仪，流量的计算方法对计量结果有非常重要的意义。
The filter member includes a filtering part to filter oil, a second orifice to rectify oil flow, and a check valve to permit oil to flow back when braking operation is released.
该过滤器的成员包括一个过滤器的一部分石油，第二个孔，以纠正油流，单向阀，允许石油回流时，制动操作释放。
The quoted MFR value is the weight of polymer melt flowing through an orifice in specified conditions, so the higher the MFR value, the lower the melt viscosity and the easier the material will flow.
MF R采用的数值是在一定的条件下通过口模的聚合物熔体的重量，所以MF R越大，熔体粘度越低，而材料的流动性就越好。
The paper introduces calculating method of energy consumpation caused by flowmeters, such as orifice flow meter, vortex flow meter, and illustrates magnitude of energy consumpation with examples.
介绍了孔板、涡街流量计测量不同流体时引起的能耗量的计算方法，举例说明了能耗量的大小。
Phase separation takes place when a two-phase flow passes through an orifice.
两相流流过孔板产生相分离。
The flow coefficients of the orifice-plate flowmeters are experimentally studied with or without a rectifier at the lower reach of a space elbow in the measuring pipe of flow.
通过实验研究，观察分析了流量测量管路中空间弯头下游有(或无)整流器时对孔板流量计流量系数的影响。
In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
Detailed measurements were made in a pipe flow for single and double orifice cases by using: this system.
应用该系统详细测量了单孔板和双孔板管流的轴向和径向平均速度。
The two-phase flow field in the vicinity of the nozzle orifice was studied numerically.
对喷嘴出口附近的两相流场进行了数值计算，并针对相关结果进行了分析。
Flow is measured via an orifice plate metering run with a differential pressure transmitter providing feedback to the control loop.
这需要比例调节阀和流量测量形成的回路控制。
Based on computational fluid dynamics, the distribution of laminar flow-field and pressure difference are obtained by numerical simulation on flow through orifice plate in detail.
以计算流体力学为工具，详细分析计算了流体流过孔板的层流流场分布以及压力降。
Color m mode Doppler echocardiography studies were obtained from mitral valve orifice toward the apex: the rate of flow propagation velocity (FPV) from apical 4 chamber views.
将m型取样线置于二尖瓣口左室流入道至心尖获取彩色左室舒张期血流传播图测量fpv。
A type of valve, typically found on small-diameter pipework, that incorporates an orifice or flow-restriction device to control fluid flow.
一般用于小直径管道系统的一种阀。它包括一个用于控制流体流动的孔板或限流装置。
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 transient flow through a pipe orifice starting from an initial steady flow has been studied via numerical analysis.
该文对初始稳定流开始的液流通过节流孔的过渡过程进行了数值解析计算。
The transient flow through a pipe orifice starting from an initial steady flow has been studied via numerical analysis.
该文对初始稳定流开始的液流通过节流孔的过渡过程进行了数值解析计算。
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