An analysis of periodic flow streamlines shows that it is probably due to the effect of leading edge vortex.

通过对沉浮运动一个周期流线图的分析，认为这是翼型前缘涡的影响造成的。

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A new computational scheme was developed to solve a three-dimensional model of a periodic flow reversal reactor by ADI alternating direction implicit method.

文中针对圆管式径向对称流向变换反应器三维模型，利用交替方向隐式方法(adi)建立新的求解格式。

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The existence and uniform boundedness of the global solutions of the model for sulphur dioxide oxidation in a tubular reactor with periodic flow reversal are proved by the invariant domain method.

利用不变区域方法，证明了二氧化硫催化氧化管式反应器流向变换强制操作模型整体解的存在性和一致有界性。

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Some things cost more than can be purchased from periodic cash flow.

FORBES: Fed Part IV: Where Is All That Money?

French musicians and critics have periodic bursts of activity, attempting to revive French music or stem the flow of outside influences.

ECONOMIST: The London Proms