查询词典 atomic age

It is one of the most important method in chemical research. The course matches Instrument Analysis course. We set up 16 experiments: atomic absorption spectrum, atomic emission spectrum, atomic fluorescent, ultraviolet-visible absorption spectrum, infra-red absorption spectrum, and molecular fluorescent which are for photometric analysis; vottammetric analysis , coulometry analysis ,volt-ampere analysis and polarogarphy for electroanalytical chemistry; Gas chromatography and liquid chromatography for chromatographic analysis.

本实验内容与仪器分析理论课内容相配套，针对光化学分析开设了原子吸收光谱、原子发射光谱、原子荧光、紫外-可见吸收光谱、红外吸收光谱、分子荧光光谱等实验；针对电化学分析开设了电位分析法、库仑分析法、伏安和极谱分析法等实验；针对色谱分析开设了气相色谱和液相色谱分析等实验，共开设了16个实验。

The results show that the atomic population is time-independent provided that the atoms are in |β11〉 state. For the other three Bell states, there will appear the periodical collapse revival of atomic populationif the initial mean photon number reaches some special values. With the increase of the initial mean photon number, the oscillation frequency of the time-evolution of atomic population increases correspondingly, and the amplitude decreases. The degree of the entanglement of the two-mode entangled coherent field has no

结果表明，当双原子体系的初态为|β11〉时，原子布居均不随时间变化；当双原子体系的初态为|β00〉，|β01〉或|β10〉且初始平均光子数达到一定值时，演化特性呈现周期性的崩塌-回复效应，并随初始光子数的增加，其演化曲线的振荡频率增大，振幅减小；双模纠缠相干光场的纠缠程度不影响Rabi振荡频率，但对振幅影响显著； Kerr介质与光场耦合系数达到一定值时，对Rabi振荡频率和幅度及原子布居的崩塌-回复周期产生强烈影响。

This invention relates to a method and device for generating cold atomic beam. Said method includes heating hot atom source in vacuum chamber to form atomic saturated vapor pressure atmosphere, cooling hot atom by three-D MOT to below 200uk and trapped to form cold atomic cloud, by the quarter wave plate reflection mirror in MOT the laser radiation pressure being unbalanced to make cold atom emitting along said direction, four tape arranged straight line set with contrary current direction is set in atom beam emission direction, which makes the atom emitted to forward to obtain cold atom beam with low speed, large flux and small transverse speed, laser beam vertical with atom beam set in the direction of cold atom emitting for atom beam state preparation to realize state concordant emitted cold atom beam.

本发明涉及一种冷原子束产生方法和装置，该方法包括在抽真空的真空室内，加热热原子源，在真空室中形成相应的原子饱和蒸汽压气氛；采用三维MOT对热原子进行冷却，冷却到200μk以下，并被捕获形成冷原子云团；通过三维MOT中开小孔的四分之一波片反射镜，而使得在该方向上激光辐射压力不平衡，使冷原子沿此方向出射；在冷原子束出射方向上，还置有载有彼此电流方向相反的四根成锥形排列的直导线，从而原子出射时将在磁场的作用下，不会沿横向膨胀而向前射出；便得到了出射速度低的、通量较大的、横向速度非常小的连续冷原子束；同时在冷原子束的出射方向上，设置有与原子束垂直的激光束，用于原子束的态制备，实现态一致的出射冷原子束。

The radial distribution function , atomic energy, atomic volume, atomic coordination numbers and hydrostatic stress are analyzed at the relaxation state.

零温弛豫态下，分析了纳米多晶铜的径向分布函数、原子能量、原子体积、原子配位数、以及原子静水压力。

The larger the atomic volume construction,the higher the stability of intermediate phase.There exist 4 eutectic systems with 9 eutectic reactions in Au-RE systems.A criterion exists between the reduced eutectic temperatureand the atomic radiiof RE metals:the Teu/TA values dedine linearly with the increase of rR Value and keep essentially a constant when rRE values are larger than 0.175nm (namely the atomic size differences between RE and Au are larger than 21%).

Au-RE系中存在4个共晶系9种共晶反应，简约共晶温度与RE原子尺寸之间存在一个判据：简约共晶温度随RE原子半径增大呈线性下降，但当RE原子半径达到约0.175nm(即与Au相对尺寸差21％)时，更大原子尺寸差不再影响液相线和共晶温度下降，简约共晶温度保持常数。

No such rules; I was in my 30's of age, a women in her 30 could be very young from now; my daughter is more than 30 now; I remember, a poet said to me in his good willing that writing love poems are quite beyond age of 50, however, poetry is not my expertise, I write for I have to. Nothing wrong with the age of 50 either; now, its pretty far from my age of 50; but I go on writing, no body says one can not write when you re 50 years of age? People still can do that, of cause, something ought to be changed, you feel the time-changing, or some agedness.

我那个时候30多岁，30岁现在看很年轻，我女儿现在有30多岁了，那个时候还有诗人跟我说，你到50岁的时候总不能写情诗了吧，他是好意，但是我觉得写诗不是我的专业，我觉得我是要写才写的，我也不知道50岁怎么了，我现在离50岁已经很远了，但是我还在写，谁说50岁不能写，照写，但是有些东西得改变，有一些沧桑。

Based on the information taken from the subcompartmental records a comparison between the actual and normal forests was made and a new point of view was proposed in the article: in the case of cultivating timber-forest which is different in cutover age, age class and growing speed within the range of the whole forest station, the forest age class distribution showing the opposite shape of "J" is of more benefit to keeping the relative stability of all the age class area than the age class distribution of th...

本文在统计森林资源小班档案卡片有关资料的基础上，把现实林分与法正林相比较，用法正林学说来指导全场森林的调查。并提出了一个新的观点：在整个经营单位内，培育不同生长速度，不同主伐年龄，龄级期不同的用材树种，森林的龄级结构呈反"J"形分布此法正分布更有利于维持各龄级面积的相对稳定，并且，年伐量的波动不大，有利于森林的永续利用。

Then, based on temperature prediction program and field study of the temperature on early-age characteristics of PCCP, and early-age temperature impact on the PCCP early and long-term performance and finally provide temperature on early-age of PCCP control methods and measures, detailedness as follows: 1、According to early-age of PCCP characteristics of heat exchange, Determine the the optimal models of factors of PCCP early-age temperature impacted.

本文首先基于有限差分数值分析研究了水泥混凝土路面早龄期温度场的预估方法；然后基于程序和现场试验研究了水泥混凝土路面早龄期温度场特征、早龄期温度场对路面早期和长期性能的影响，最后研究提出了改善路面性能的早龄期温度控制方法和措施。

At all stages, the epithelial cell height of efferent ducts in the control ratswas higher than that in the tats in DES-treated rats. The epithelial cell height of efferent ducts in DES-treated rats was reduced 45% at age 10 days, 41% at age 18 days, 37% at age 25 days, 71% at age 35 days and 69% at age 60 days .

各个年龄阶段与对照组相比均有明显的下降，具有统计学意义。10天组平均高度下降了45％，18天组平均高度下降了41％，25天组平均高度下降了37％，35天组平均高度下降了71％，60天组平均高度下降了69％。

objective to determine the menarche age among female students and the relation between body fat and menarche in anhui province to provide theoretical basis for adopting intervention measure and carrying out health education.methods probability unit regression were used to calculate mmas in 3 000 girls aged 9～18 years old,who were selected from 3 areas in 2005.results mmas were 12.76 and 13.11 years old for urban and rural girls respectively.the youngest age was 10.the menarche age was significantly,related with bmi sebum thickness of abdomen,sebum thickness of shoulder blade and the upper arm.conclusion there was significant relationship between menarche age and body fat.menarche age showed an ahead trend in han national students in anhui province.sex eduction should be conducted in advance,and it was important to strengthen sex education in adolescent.

目的 了解安徽省女生月经初潮及初潮前后体脂变化情况，为采取干预措施和健康教育提供理论依据。方法按照2005年全国学生体质调研要求，采用分层整群抽样方法，对安徽省南、中、北3个地区城乡9～18岁中小学女生3000人进行调查，并测量体质指数、腹部皮脂厚度、上臂皮脂厚度和肩胛下皮脂厚度4项指标。结果城市女生半数月经初潮平均年龄为12.76岁，农村女生13.11岁，城乡最小月经初潮年龄均为10岁。体质指数、腹部皮脂厚度、上臂皮脂厚度和肩胛下皮脂厚度4项指标均值来潮组均大于未来潮组，差异有统计学意义，p.01。结论月经初潮年龄与体脂因素关系密切；安徽省汉族学生月经初潮年龄呈现提前趋势，性教育应提前，加强青春期性教育尤为重要。

It has to be computed by the host for the actual clock rate.

主控制器可以用来计算实际的时钟速率。

Let's see what you got.

让我看看你的东西