短語詞組短語threshold population inversion density 臨界粒子數(shù)反轉密度;閾值粒子數(shù)反轉密度population inversion lifetime 粒子數(shù)反轉壽命population inversion density 反轉粒子數(shù)密度atom population inversion 原子布局反轉maser without population inversion 無粒子數(shù)反轉脈澤amplification without population inversion 無反轉放大average population inversion 平均粒子數(shù)反轉population inversion level 反轉粒子數(shù)密度distribution for population inversion [核]粒子數(shù)反轉分布 返回 population inversion