critical flow

基本解釋

The effect of some parameters of the system on the values of critical flow velocity is discussed according to the analytical expressions derived.
利用臨界流速公式系統(tǒng)地分析和討論扭轉(zhuǎn)剛度、重力系數(shù)和軸向預緊力對管道臨界流速的影響特性。
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.
這里的液流系數(shù)是預測值。因此這些數(shù)據(jù)只是大致的數(shù)據(jù)，不能用作高流量臨界值或壓降估計值。
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，采用臨界流文丘利噴嘴作為量值傳遞標準是煤氣表標定技術(shù)的發(fā)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.
FORBES: The Problem with Heroic Leaders
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

臨界流
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.
為提高內(nèi)錐流量計氣體流量測量的準確性,探索可膨脹系數(shù)的高精度計算模型,設(shè)計了內(nèi)錐流量計實驗樣機,利用正壓法臨界流音速噴嘴氣體流量標準裝置開展了實驗,根據(jù)可膨脹系數(shù)的擬合方案,獲得了高準確度的計算公式;與經(jīng)典標準孔板公式、標準文丘里管公式及國外研究機構(gòu)給出的三個內(nèi)錐流量計公式進行了比較,繪出不同節(jié)流比下各公式可膨脹系數(shù)的預測曲線及相對誤差曲線,得出當流動條件相同時,對于同一節(jié)流比及同一等熵指數(shù),研究獲得的可膨脹系數(shù)公式均方根誤差優(yōu)于0.7%。
電子、通信與自動控制技術(shù)
臨界流函數(shù)