orifice

Research on Servo Valve Nozzle Eyelet Flow Character Measurement System;

伺服阀喷嘴小孔流量特性测量系统的研制

The effect on timing course and sensitivity by pinhole-flux formula q=C A_TΔP~;

小孔流量公式q=C A_TΔP~对调速过程及灵敏度的影响

STUDY ON MEASUREMENT METHOD OF SMALL ORIFICE CONDUCTANCE USING GAS MICRO-FLOWMETER

气体微流量计测量小孔流导方法研究

square-edged orifice

直角铣孔流量计孔板

Measuring Low Velocity Turbulence Field with Hartmann and the Extend of Small Aperture Beam Technique;

Hartmann测量低速湍流场及小孔径光束技术的拓展

Numerical studies about the discharge coefficient of film cooling hole at narrow space

狭小空间内气膜孔流量系数的数值模拟

orifice well tester

孔板式天然气流量计

bellows-type gas or orifice meter

伸缩式气体孔板流量计

And, the cooling flow rate of the clearance between stator and rotor as well as the hole of rotor flange was obtained.

获得了静盘与转盘间隙以及转盘外缘小孔的冷气流量。

Shape Study on Large-discharge Flood-releasing Energy Dissipator for Crest Spillway of Medium and Small-sized Arch Dam

中小型拱坝表孔大流量泄洪消能建筑物体形研究

Analysis of changes of pressure before the orifices in laterals under low pressure drip irrigation

低压滴灌小孔出流孔前压力变化研究

a hand operated lever that controls the throttle valve.

控制节流闸流量的手孔杠杆。

Eight drainage holes ensure effective and safe drain.

8个引流孔，保证引流量，有效更安全。

Convective heat transfer simulation in holes of inclined multihole wall film cooling

多斜孔壁冷却方式小孔内对流换热的数值模拟

Peak Day (Hour) Volume

尖峰日（小时）流量

Study on Slender Hole Ultra-precision Measuring System and Precision Analysis;

细长小孔孔径精密测量系统的设计及精度分析

Research on high-precision capacitive automatic measuring system for pinhole diameter

高精度电容式小孔孔径自动测量系统的研究

The density P is that of the fluid escaping from the orifice.

上式中p是从小孔喷出的流体密度。