The results of the wind tunnel test show the flutter critical speed of the wing model increases by 37% after the implementation of AFS system.

风洞试验结果说明，采用颤振主动抑制控制系统后，机翼的颤振临界速度可提高37%。

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This paper presents the method of broad-sense original parameter of continuous body of elasticity for calculating the critical speed of rotor system.

本文提出用弹性连续体广义初参数法计算转子系统临界转速。

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Therefore, the calculation of critical speed of anisotropic supporting rotor-bearing system of the PMSM is a typical mechanical and electrical coupling problem.

因此，永磁同步电动机转子-轴承系统临界转速计算是一个典型的机电耦合问题。

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For all retailers, efficiency is critical and speed of delivery is nearly as important as the cost of the goods sold.

FORBES: Shining Through On The Shelves

In the Internet space, another critical factor is speed of execution.

FORBES: Can Groupon Succeed in China?

But mostly doctors have been critical of the speed with which the helpline has been introduced across England.

BBC: NHS Direct: Friend or foe?