valve orifice

In the preliminary experiments the adiabatic expansion efficiency of orifice pulse tube with low temperature switching valve can be higher than 40%. These results show the application prospects of the machine.

对带低温切换阀的小孔气库型脉冲管的等熵膨胀效率的初步实验结果表明，其等熵效率可达40%以上，显示了一定的应用前景。

Firstly, MATLAB software is used to do a function resolution on flow area of the anomalous orifice spool valve, and numerical simulation on velocity and pressure distribution in the valve cartridge under different inlet flows and opening are done and the results are analyzed.

首先，对异形阀口滑阀的过流面积进行MATLAB数值解析，对不同流量、阀口开度下阀内的速度场和压力分布等做了数值模拟，并对数值计算或仿真结果做了分析。

Comparison of Allograft Aortic Valve Orifice Area as Estimated by the Gorlin Formula and the Continuity Equation

连续性方程和Gorlin公式估测人正常主动脉瓣开口面积的比较

Objective To evaluate the feasibility and effectiveness of double orifice valve repair for mitral insufficiency.

目的探讨双孔二尖瓣成形术矫治先天性二尖瓣关闭不全的可行性和有效性.

Study and Application of the Bernoulli Effect Near a Valve Orifice

阀口高速流区伯努利效应分析及其应用

The tests demonstrate fiat the valve acts as an orifice.

试验表明：安全阀的流动特性和孔扳相类似。

The testing of prosthetic valve orifice area using image processing method

用图像处理方法检测人工心瓣开口面积

This paper introduces a mixing technology and control method utilizing ratio valve with floating orifice and its application in LPG medium-pressure network.

介绍了一种利用浮动孔口比例阀开发的混气工艺和控制方法，以及在LPG城市中压管网上的应用。

The valve shown has a pilot and a bleed orifice.

该阀具有控制孔和流出孔.