Based on CGEM and with the application of input-output analysis and optimistic control theory, a two-level model of macroeconomic management is established.
以CGEM为基础，综合运用投入产出分析和最优控制理论，设计出一个二层次的宏观经济管理模型。
Using the periodic orbit theory, we computed the quantum level density of a particle in the two-dimensional harmonic oscillator potential with and without the magnetic flux line for different cases.
利用周期轨道理论，我们计算了在不同情况下，一个粒子在二维谐振子势中存在和不存在磁通量时的量子能级密度。
The semiclassical laser theory proposed by Lamb for two-level system is extended to the case of dye lasers. Mode coupling equations are deduced, and a discussion is given.
本文将兰姆的二能级半经典激光器理论，推广至染料激光器系统，得出模式耦合方程，并作了些具体讨论。
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