The single standing wave mode in a circular cylinder subjected to a vertical oscillation was studied by employing two-time-scale perturbation expansions.

本文利用奇异摄动理论的两时间变量展开法，研究了垂直强迫圆柱形容器中的单一水表面驻波模式。

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the time scale: Variability and change are regarded as two facets of the same phenomenon.

时间框架:差异和变化被认为是同一现象的两面。

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The NNC is composed of an inside loop controller and an outside loop one in accordance with the two time scale.

基于时标分离的原则，神经控制器被设计为内环控制器和外环控制器两个部分。

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The new guidance would have a sounder footing if it had argued that no two regional crises were alike and that the requirement to conduct a full-scale decisive combined arms campaign in two locations at one time was not only unlikely, but failed to recognize strategic and operational advantages the U.S. might have in one or both of the two regions.

CENTERFORSECURITYPOLICY: Section IV: Building a Two-MRC Force for the 21st Century

As a global power with worldwide interests, it is imperative that the United States now and for the foreseeable future be able to deter and defeat large-scale, cross-border aggression in two distant theaters in overlapping time frames, preferably in concert with regional allies.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century