population inversion
人口倒置：在一个系统中
常用释义
英式发音
美式发音
基本释义
- 人口倒置：在一个系统中，处于激发态的原子或分子的数量多于处于基态的原子或分子的现象。
例句
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1·The necessary population inversion can be achieved in a variety of ways .我们可以用各种方法来实现这种必要的粒子数反转。
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2·The value of atomic population inversion in a Yurke-Stoler coherent state is between them.偶相干态光场中原子布居数反转的衰减速度较慢；
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3·The possible mechanisms of population inversion under the average high temperature condition has been analysed.分析了可能导致高温条件下粒子数反转的机制。
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4·Chemical laser is characteristically energized by an exoergic chemical reaction which produces the necessary population inversion of lasing species.化学激光器是以释能化学反应提供能源，并且以化学反应产生粒子数反转为基础的。
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5·Being very high intensity, this focus induces a population inversion in the oxygen atoms, ensuring that there are more excited than non-excited atoms.在高强度下，这种聚焦会使氧原子的粒子束反转，确保了激发的原子多于未被激发的原子。
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6·With the increase of the average photon number of the coherent light field, the oscillation frequency of the atomic population inversion increases correspondingly.随相干光场平均光子数的增加粒子数反转的振荡频率增大；
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7·Microwave emission lines with anomalous intensity ratio would be produced when the relativistic electrons move through a, molecular cloud with a certain population inversion.相对论电子在某种粒子数反转布居的分子云中穿行时，可以产生具有反常强度比的微波发射谱线。
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8·When the squeezing coefficient of the initial field increases, the frequency of collapse-revival in atomic population inversion increases, and the amplitude of revival decreases.研究结果表明，初始光场的压缩系数增大，崩塌和回复的频率增大，回复值减小。
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9·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.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。
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10·It should be noted that the atomic coupling coefficient exhibits the nonlinear effect and the entanglement measure oscillates periodically in accordance with atomic population inversion.值得一提的是可得出原子间耦合作用强度对纠缠量的非线性效应，并且纠缠量展现出与原子反转粒子数一致的周期振荡现象。