布居数,population英语短句,例句大全

布居数,population
1)population[英][,p?pju'le??n][美]['pɑpj?'le??n]布居数
1.Time-evolution of the population of a four-level atom in a two-mode cavity;两模微腔中四能级原子粒子布居数随时间的演化
2.With the help of numerical calculation and theoretical analysis, we find that the populations of the upper and lower levels display quasi-oscillation, and the frequency and amplitude of the oscillation is greatly affected by the intensity of the external-driving field Ω, the detuning δ and the background decay of the upper level γ.通过理论分析和数值计算发现,原子上下能级的布居数将出现准周期性振荡的性质,其振荡的频率和振荡的幅度与上能级的耗散系数γ,驱动场的作用强度,驱动场和共振频率失谐度δ等相关;原子上能级与光子晶体带边的相对位置将直接影响到原子自发辐射的模式。
3.The basic atomic physical processes of laser beams interacting with a solid target is checked and the effects of a Planckian radiation field on the population of bound electrons are studied.研究了外加普朗克辐射场对不同温度和密度下的等离子体的主量子壳层束缚电子的布居数的分布以及随时间的演化规律的调制作用。

英文短句/例句

1.Experimental Research on Coherent Population Trapping Within Zeeman Sublevels of Rubidium under Hanle Configuration;Hanle构型下铷原子塞曼子能级相干布居数囚禁实验研究
2.The Research of Distributed Digital Home Based on Ipv6;基于IPv6的分布式数字家居的研究
3.ANALYSIS OF NEAR EDGE FINE STRUCTURE AND ELECTRONIC POPULATIONS IN SAPPHIRE蓝宝石的近边精细结构和电子数布居分析
4.Numerical Simulation and Analysis of Four-level System Population Transfer;四能级系统布居转移的数值模拟与分析
5.The Research of Wavepacket Evolution and Population of Ammonia in Strong Laser Field强激光场下NH_3分子波包演化和粒子数布居研究
6.The dog's barking kept the Browns at swords' points with their neighbours for months.狗的吠叫声使布朗家与邻居处于敌对状态已有数月之久。
7.The total number of inhabitants constituting a particular race, class, or group in a specified area.人口分布构成某地区的人种、类群或种群的居住者的总数
8.Multiple-voice singing is mainly confined to the ethnic minorities of the south and southwest,中国多声部民歌的分布，主要集中于西南和南方各少数民族聚居区，
9.A quantitative study on the correlation between settlements distribution and geographical-climatic factors by Poisson log-linear model;居民地分布与地理气候因子的相关性定量化研究——Poisson对数线性模型
10.Trend of Distribution of Body Mass Index among Adults in Liaoning Province during 1989 to 20061989—2006年辽宁省成年居民体质指数分布及变化趋势
11.Laser Frequency Stabilization of Coherent Population Trapping Atomic Frequency Standard Realized with Digital Servo数字伺服实现相干布居囚禁原子频标的激光稳频
12.The Studies of Influence of Ventilation System Parameters on Air Distribution of Habitation Cabin in Space Station通风系统参数对居住舱人活动区气流分布影响的研究
13.a resident of Nebraska.内布拉斯加州的居民。
14.a thinly scattered population散布得很稀疏的居民
15.The sample household survey released recently by the Housing Board shows a downturn in neighborliness among Singaporeans.建屋发展局日前公布的调查就显示，国人认识的邻居数目有下降的趋势。
16.It had twice as many yoga clubs per head than the other cities sampled, while the level of obese inhabitants is below the national average.布莱顿的人均瑜伽馆数量为其它抽样城市的2倍，城市居民的肥胖比例则低于全国平均水平。
17.Ogbu and others point to similar examples among "involuntary minorities"" around the world.奥格布和其它人还指出一些在世界上“非自愿移居的少数民族”中的一些类似的例子。
18.it is a friendly neighborhood; my neighborhood voted for Bush.友好的邻居关系；我的邻居把票投给了布什。

相关短句/例句

Mulliken populationMulliken布居数
1.Comparing the Bond Mulliken population,we found which bond was the initial bond for pyrolysis and then we got the intermediate.用密度泛函 ( DFT)方法 ,在 UB3LYP/6- 31 G( d)水平上研究了煤中吡啶型氮的热解机理 ,对热解过程中由于官能团周围环境的不同而形成的三类吡啶自由基进行了量子化学计算 ,通过对键的 Mulliken布居数等计算结果的分析 ,分别得到了这三类自由基的热解途径。
2.The present work employs the total-energy psudopotential technique within the framework of the density-functional theory with both the local-density approximation(LDA) and the generalized gredu approximation(GGA) for the exchange-correlation so as to calculate the structural and electronic properties and Mulliken population analysis of Li4CaB2O6 in the orthorhombic structure.本文通过总能赝势方法理论研究了八面体晶体材料Li4CaB2O6的晶体和电子结构以及Mulliken布居数;本文使用的总能赝势方法包括局域密度近似和广义梯度近似两种密度泛涵理论。
3)Population difference布居数差
4)population inversion布居反转数
5)population inversion布居数反转
1.The atomic population inversion in the system of a two-mode SU(1,1) coherent field interacting with a two-level atom is investigated by solving Milburn equation.通过求解系统的Milburn方程,研究了两能级原子与双模SU(1,1)相干态光场相互作用系统中原子的布居数反转,分析了内禀退相干、双模光子数差和平均光子数对原子布居数反转的影响。
2.The influence of atomic motion perpendicularity to the axes of resonant cavity and initial states of the system on the atomic population inversion and double-atom dipole squeezing are analysed numerically.通过数值计算,分析了原子垂直于腔轴的运动以及系统初态对双原子能级布居数反转和双原子偶极压缩的影响。
3.With the consideration of Milburn model of intrinsic decoherece,the atomic population inversion in the system of the binomial optical field interacting with a two-level atom is inverstigated.在Milburn内禀退相干模型下,研究了二项式光场与二能级原子相互作用系统中原子的布居数反转,分析了内禀退相干,二项式光场系数和场的最大光子数对原子布居数反转的影响。
6)atomic population inversion布居数反转
1.The effects of the frequency modulation in sinusoidal form on the atomic population inversion and the squeezing properties of the atom and field are studied.研究了二能级原子与单模电磁场相互作用时的双光子过程,主要考虑了在相干态初始条件下场频率发生变化时的情况,讨论了场频率随时间作正弦缓慢变化对原子布居数反转、光场压缩与原子压缩等特性的影响。
2.It is found that the collapse and revival phenomena of the atomic population inversion will disappear as the frequency changing with time in sine form; and the frequency varying in impulse form can lead to some new collapses and new revivals in the evolut.研究发现 :当场频率随时间作正弦变化时 ,原子布居数反转的崩塌和回复现象将消失 ;当场频率随时间作脉冲变化时 ,布居数反转随时间的演化将诱发出新的崩塌和回复过程。