critical flow

基本解释

The effect of some parameters of the system on the values of critical flow velocity is discussed according to the analytical expressions derived.
利用临界流速公式系统地分析和讨论扭转刚度、重力系数和轴向预紧力对管道临界流速的影响特性。
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 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。

By redirecting the flow of a conversation, you elicit critical information and show that you care about what the other person is thinking.
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Accounting ignores these critical details while finance incorporates them by using cash flow metrics rather than earnings metrics and a cost of capital measure that reflects current interest rates plus a component for a company's overall riskiness.
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The free flow of such knowledge and data could be critical in reducing the tens of thousands of medically related accidental deaths each year.
FORBES: Fact and Comment

临界流
With the gas flow calibration system based on the critical flow nozzles and positive pressure method,the experimental research has been carried out and a calculation formula has been obtained after deducing the fitting model of expansibility factor of cone flowmeters theoretically. Comparing with standard orifice,venturi,and three formulas for the cone flowmeters achieved from research organization abroad,the prediction curves and relatively error curves of the expansibility factor with different equivalent diameter ratios have been depicted.
为提高内锥流量计气体流量测量的准确性,探索可膨胀系数的高精度计算模型,设计了内锥流量计实验样机,利用正压法临界流音速喷嘴气体流量标准装置开展了实验,根据可膨胀系数的拟合方案,获得了高准确度的计算公式;与经典标准孔板公式、标准文丘里管公式及国外研究机构给出的三个内锥流量计公式进行了比较,绘出不同节流比下各公式可膨胀系数的预测曲线及相对误差曲线,得出当流动条件相同时,对于同一节流比及同一等熵指数,研究获得的可膨胀系数公式均方根误差优于0.7%。
电子、通信与自动控制技术
临界流函数