Transmision standard of gas flow capacity & critical flow Venturi nozzle
气体流量传递标准&临界流 文丘里 喷嘴
The principle and application of critical flow Venturi nozzle flowmeter s
临界流 文丘里 喷嘴流量计的原理与应用
We optimized the other two important components of the catalytic water heater the venturi pipe and nozzle .
文丘里管和 喷嘴是催化燃烧热水器的关键组分，实验中对二者进行了优化。
On the basis of aerodynamics this paper analyses the characteristics of the critical Venturi nozzle with a large curvature which could have a more stable discharge coefficient and a higher accuracy in practical applications .
本文根据空气动力学原理分析了大曲率 音速 文 丘 利 喷嘴的特性，指出其流出系数具有较高的稳定性，因而可望提高 喷嘴的实际使用精确度。
The superiority flow capacity equation . main characteristic parameters and some problems of critical flow Venturi nozzle as transmission standard of gas flow . capacity in application are introduced and discussed in this paper .
文本对临界流 文丘里 喷嘴作为气体流量传递标准的优越性，其流量方程、主要特性参数及在应用中的某些问题进行了介绍和讨论。
Analyzing and Research of the Replacing Venturi Nozzle with the Inlet Quadrant Nozzle
圆弧型 集流器改用为 ISO 文丘里 喷嘴的分析与试验研究
The Work Principle and Structure of Venturi Tube in Nozzle ' Inner
文丘里管 射流 装置的结构及工作原理
Progress of critical flow Venturi nozzle in flow measurement
流量测量临界流 文丘里 喷嘴的进展
The paper states that using critical flow venturi nozzle as the measuring value transferring standard is the developing orientation of calibration technology of gas meters .
最后指出，采用临界流 文 丘 利 喷嘴作为量值传递标准是煤气表标定技术的发展方向。
International standard ISO 9300 Gas flow measured by critical flow Venturi nozzle was issued in 1990 . The article introduces the foreign research progress in this field in over ten years past briefly . The main achievements include the following aspects : widening of useful range for Reynolds number ;
简介颁布国际标准ISO9300《临界流 文丘里 喷嘴测量气体流量》（1990年），十余年来国际上对该流量计的研究情况，主要在以下几方面有显著的进展：雷诺数使用范围的拓宽；
The vacuum sonic Venturi nozzle test facility is used for flowmeter calibrate under normal pressure by domestic flowmeter manufactories .
现在国内的流量计生产厂家大多使用负压法音速 文丘里 喷嘴检定装置进行常压下检定。
Toroidal throat Venturi nozzle
喇叭口喉部 文丘里 喷嘴
The on the spot inspection of natural gas orifice meter is adopting the transitivity calibration method taking Venturi nozzle as calibration scale .
天然气孔板流量计的现场检定，采用以 文丘里 音速 喷嘴作为标准表的传递型校准法。
Connect the venturi nozzle to the vacuum pressure gauge .
将 文丘里 管 喷嘴连接到真空压力表。
In other instruments the stream is accelerated through a Venturi or nozzle .
在其他仪器中， 液体流则是通过 文氏 管或 喷嘴加速的。
文丘里喷嘴，文氏管喷嘴