threshold population inversion density 临界粒子数反转密度 ; 阈值粒子数反转密度

saturation of the population inversion 反转粒子数饱和

distribution for population inversion [核] 粒子数反转分布

population inversion lifetime 粒子数反转寿命

threshold population inversion 阈值粒子数反转

initial population inversion 初始粒子数反转

population inversion 粒子分布倒置

population inversion ratio 粒子数反转比

population inversion level 反转粒子数密度

atomic population inversion 原子反转