Considering a kind of neutral delay differential equations, a sufficient condition for the oscillation of all solutions of neutral delay differential equation in critical state is obtained.

讨论了一类中立型时滞微分方程所有解的振动性，获得了临界状态下该方程所有解振动的一个充分条件。

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Coupling the Bernoulli's equation and critical tractive stress theory, a critical hydraulic gradient model based on critical velocity is developed.

结合伯努里方程和临界牵引力理论，得到了基于临界速度的临界水力梯度公式；

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The equation on critical stress of matrix cracking that could consider the effect of interface layer and thermal stress can be obtained.

在此基础上建立了可以考虑界面层和热应力影响的基体开裂临界应力求解方程。

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The price of corn is a critical variable in the world food equation, and food markets are on edge because U.S. corn stocks are plummeting due to the ethanol mandate.

FORBES: Feds Could Lessen Drought Impacts But Don't Bet The Farm On It

Awards like the Grammys and the Oscars have always been a balance of critical recognition and popularity contest, but social media has shifted the equation a bit.

FORBES: How To Win The Most Grammys? Social Media Buzz!