利用速率方程理论，得到包含激光增益介质反转密度、光子密度和饱和吸收介质基态布居数密度的速率方程组。
Using rate equation theory, the equation group including the population inversion density of the gain medium, photon density and the absorber ground state population density is acquired.
研究了密度反转和等间距三管间相互作用下，围绕上、中、下三管外蓄冰过程蓄冰量的变化规律。
Analyses the variation of ice storage volume around the three tubes under the effect of water density inversion.
该模型预测的电子密度增加，增加航道水深在亚阈值区或温和反转区域。
This model predicts an increased electron density with an increasing channel depth in subthreshold region or mild inversion region.
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