Much better to stick with a two-level system of pass and fail, or (if you will insist on such elitism) one extra level of “pass with distinction” for the top quartile.
最好还是继续两级方案，即通过和不通过，或者（若坚持精英主义）再为顶尖者增加“优秀通过”这个额外的级别。
With the time-dependent perturbation theory, the dynamics of a two-level system coupled to an Bose field is revisited.
从含时微扰论的角度出发，重新求解了与玻色场相耦合的两态系统的动力学。
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。
Based on the behavior of spectral hole burning of two-level system, situations of persistent hole burning and photon gated spectral hole burning have also been considered.
以二能级系统光谱烧孔为基础，讨论了永久性光谱烧孔和光子选通光谱烧孔中孔的行为。
We have studied the saturation effect of degenerate four-wave mixing in Doppler-broadened two-level system.
我们研究了多普勒增宽的二能级系统中，简并四波混频的饱和效应。
In this paper, the time-resolved degenerate four-wave mixing in two-level system is treated rigorously with the density-matrix method.
本文用密度矩阵方法严格处理了在共振情况下二能级系统时间分辨简并四波混频问题。
The corresponding area theorem is derived, which is a generalization of the area theorem related initially to the light pulse propagation through the two-level system.
导出了相应的“面积定理”，是将只关系到光脉冲在二能级系统中传播的面积定理的一种推广。
Based on general situation decision theory and two - level system decision theory, this paper puts forward a new method and creates a new model of complex system multilevel situation decision.
本文基于单层局势决策和二层系统决策理论提出了用于复杂系统的一种多层局势决策新方法，并建立了相应的数学模型。
The interaction between a weak probe laser pulse and a two-level system strongly driven by a near-resonant laser pulse is studied by dressed model.
我们用缀饰模型研究强近共振激光脉冲驱动下二能级系统与弱试探脉冲的相互作用。
The stimulated photon echo in degenerate two-level system has been studied.
研究了简并二能级系统的受激光子回波效应。
The stimulated photon echo in degenerate two-level system has been studied.
研究了简并二能级系统的受激光子回波效应。
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