In this paper, the laser cavity two-mode oscillation and mode competition are studied. The paper discusses the intensity of each modes and obtains stable state condition.
本文研究激光腔内双模振荡及模式竞争。讨论每个模式的强度，并得到稳态条件。
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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