光束模式展开法可用于近似计算远场的弱截断光束。
The beam expansion method is suited to approximate the weakly truncated beams in the far field.
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。
The single standing wave mode in a circular cylinder subjected to a vertical oscillation was studied by employing two-time-scale perturbation expansions.
按照理想波导模展开法推导了模式耦合方程。
The coupled mode equations are built by means of expanding perfect waveguide modes.
按照理想波导模展开法推导了模式耦合方程。
The coupled mode equations are built by means of expanding perfect waveguide modes.
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