原子的

How did the synthesis elaborate Bohr according to the hydrogen atom spectrum experiment rule and Planck, in Einstein's quantum theory introduction atom, thus draws out the energy level rule, the Bohr atom theory's success has triggered the people to the atomic phenomenon and the atomic structure widespread deep research, promoted the atomic physics development.

综合论述了玻尔如何根据氢原子光谱实验规律并将普朗克、爱因斯坦的量子理论引入原子内部，从而引出能级规律，玻尔原子理论的成功触发了人们对原子现象和原子结构的广泛深入研究，推动了原子物理学的发展。

Each In atom is bonded with one Si atoms and two neighboring In atoms; b The adsorption energy of single In atom on the FHUC of the Si(111)-7x7 is 0.2eV higher than that on the UHUC. As a result, In atoms prefer to enucleate at the UHUC and develop into ordered dots array accordingly.

第一原理计算表明， a六个 In 原子在 Si(111)-7x7表面形成一种扭曲的六边形结构，每个 In 原子与一个衬底 Si 原子及两个相邻的 In 原子形成共价键，这些共价键具有类 sp2构型； b单个 In 原子吸附在 Si(111)-7x7单胞的 FHUC 时的吸附能较吸附在没有层错的一半的吸附能低0.2eV/原子，故而 In 团簇优先在 FHUC 成核生长并进而形成有序的点阵结构。

Moreover, the mechanism, characteristics and applications of atom interferometers are introduced, among which the application of the atom interferometers in gravitational acceleration measurement is a main concern. The present researches on the precision analysis of cold atom interferometer are reviewed in this chapter.

第一章综述了国内外冷原子物理和原子干涉仪的研究现状；介绍了原子干涉仪的基本原理及其应用；着重分析利用原子干涉仪测量重力加速度的方法，以及原子干涉仪精度分析的研究现状。

The results show that at finite temperature the thermal expansions for interatom ic spacings near the ends of monatomic chain are larger than those in the middle of the monatomic chain, and the thermal expansion coefficients near the ends of monatomic chain are smaller than those in the midd le of the monatomic chain.

研究结果表明，在有限温度下，纳米单原子链中靠近两端的原子间距的热膨胀大于内部的原子间距的热膨胀，而原子链中靠近两端的原子间距的热膨胀系数小于内部的原子间距热膨胀系数。

With proper atomic coherence, the performance has the following advantages compared with that of the velocity selection of the ultracold two-level atoms by the micromaser: high resonant transmitted efficiency, low unresonant transmitted efficiency, and large velocity selection scale. The second part includes the fifth chapter.

原子透射几率只受到一种量子干涉效应的影响，其来源为V型的两个跃迁通道，因此Micromaser对入射超冷V型三能级原子束速度的选择性能深深地受到原子相干性的影响，我们发现选取适当的原子相干参数以及其它参数，速度选择性能可以达到很理想的状态：共振原子透射效率高、透射原子束的速度纯度好、速度选择范围大。

We establish the quantum theory of the one-mode micromaser injected by ultracold V-type three-level atoms with atomic coherence, and discuss the properties of the emission probability, the photon statistics, the spectrum and the velocity selection. We find the following results. There are two sets of peaks in the plot of the emission probability versus the cavity length. The injected atomic coherence can deeply affect the values of the two sets of peaks and the unresonant platform.

第一部分包括第一章到第四章，在这部分，我们建立了具有原子相干性的超冷V型三能级原子注入的单模Micromaser的量子理论，研究了原子发射几率、腔场光子统计、腔场光谱、以及腔对原子速度选择等性质，并着重研究了原子相干性对这些性质的影响。

For comp ound 7, the cage is consisted by six MoO〓 and four PO〓. The six MoO〓 octahedrons have consisted to the loop structure, the there PO〓 tetra hedron become triangle and the other one lies the centre. The one oxygen of two MoO〓 octahedron is coordinated to Mn atom which linked the other cage like this cag e and this Mn have six ligands.

在化合物7中，每一个笼由6个MoO〓八面体和4个PO〓四面体构成，6个MoO〓八面体构成环，四个PO〓四面体形成一个三角形在其上面，4个P和6个Mo具有C〓的对称性，每二个MoO〓八面体提供一个O原子与Mn原子配位，这个Mn原子再与相同的这样的笼相连，形成一个中间细两端粗的形状，这个Mn原子是6配位的，每一个这样的笼再通过一个Mn原子连接起来，形成二维的网状结构，而这个Mn原子是五配位的。

The calculated results show that azido in azides has linear structure , the most optimized CaN6 has linear structure , and the most optimized (CaN6)n (n=2～5) clusters have chain structure of perpendicularity of approximate diamond composed by two azido with two Ca atoms . The middle N atoms of azido show positive, the N atoms at both ends of azido show negative, and the N atoms effected with Ca atoms directly show more negative . There is strong ionic bond between the Ca and N atoms. The IR spectra of the most optimized (CaN6)n (n=1～5) clusters have four vibrational sections , the whole strongest vibrational peak lies in 2195～2280cm-1,and the vibrational mode is anti-symmetric stretching vibration of N-N bonds in azido . Stability analysis show that (CaN6)3 and (CaN6)5 clusters are more stable than other clusters .

结果表明，叠氮化合物中叠氮基以直线型存在，CaN6团簇的最稳定结构为线型结构，(CaN6)n(n=2～5)团簇首先由两个叠氮基与两个Ca原子构成一个近似菱形，再由菱形相互垂直形成链状最稳定结构；叠氮基中间的N原子显示正电性，两端的N原子显示负电性，且与Ca直接作用的N原子负电性更强，金属Ca原子和N原子之间形成很强的离子键；(CaN6)n(n=1～5)团簇最稳定结构的IR光谱分为4个部分，其最强振动峰均位于2195～2280cm-1，振动模式为叠氮基中N-N键的反对称伸缩振动；稳定性分析显示，(CaN6)3和(CaN6)5团簇相对于其他团簇较为稳定。

Under an appropriate condition, the squeezed vacuum field can trap the two atoms inri.An analytical expression of emission spectrum for three-level atom interacted with two-mode cavity field is given. The effects of the initial state of system on the emission spectrum for three-level atom are explored.

我们给出了好腔中与双模腔场相互作用的三能级原子发射谱的一般表达式，探讨了系统初态对三能级原子发射谱的影响，阐明了只有原子和双模驱动场初始时刻均处于相干叠加态，原子不同跃迁通道间的量子干涉才使得原子发射谱呈现相位敏感性。

For the calculations of Mon (n= 2-55) clusters, the linear and planar clusters have a strong tendency to form diatomic pairs to assemble short-long bonds alternation structures which makes them like non-metallic clusters, the short bonds are characterized as covalent non-metallic bonds and the long ones are much like weak metal bonds.

本文首先计算了各种不同结构的Mon（n=2-55）原子簇，发现一维和二维Mo原子簇表现出了一定的非金属原子簇的性质，簇中原子有明显的成双原子对趋势，致使原子簇具有短-长键交替的几何结构，短键和长键分别呈现强共价键和弱金属键的特性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。