查询词典 atom

All of these results confirmed that the quenching effect of sulfur atom. The distance between sulfur atom and chromophore played an important role in the self-quenching effect.

通过实验，进一步证实了硫原子对发光基团的荧光淬灭作用，说明二硫代酯与发光基团之间的距离对硫的荧光淬灭作用有很大的影响。

We study dynamics of the hydrogen atom near a metal surface using the closed orbit theory, and discuss its changes of properties with the varying of the distance d between the atom and metal surface.

采用闭合轨道理论研究了近金属表面里德堡氢原子的动力学性质，讨论了氢原子电子的运动性质随原子与金属表面距离d变化的情况。

The micro movement of deposited cluster and the microstructure evolution of thin film have been studied in dimension of atom-cluster in this paper. There are some important applications to do deeply research on the migration, coacervation and nucleation of atom cluster, to optimize the deposition process, to enhance the characteristics of thin film.

在原子尺度上揭示膜层形成初期粒子的微观变化过程及膜层微观结构的演化规律，对深入了解表面粒子的迁移、吸附和成核，对改进和优化薄膜生长工艺、提高薄膜质量、改善薄膜性质具有重要意义。

The coordination number of the central atom in a compound is the number of atoms which are directly linked to the central atom.

化合物中中心原子的配位数是指直接与中心原子相连接的原子的数目。

How is Thomson's model of the atom different from Dalton's model of the atom?

汤姆生的原子模型和道尔顿的原子模型有什么区别？

A molecular dynamics simulation was utilized to study Al-Cu alloy nanowires for obtaining mechanical properties and deformation mechanisms by changing the ratio of Al atom to Cu atom.

使用分子动力学方法模拟Al-Cu合金纳米线的拉伸变形，通过改变原子比例来控制纳米线的机械性能和变形机制。

The oxidation number of an element in any chemical entity is the charge which would be present on an atom of the element if the electrons in each bond were assigned to the more electronegative atom.

氧化数是指某元素一个原子的电荷数，这种电荷数由假设把每个化学键中的电子指定给电负性更大的原子而求得。

He population analysis proved the interaction between helium atom and V was electrovalent bond. The helium had the stronger attractive to the vanadium atom which was in lattice site.

i-He(o2)体系在四种Ti-He体系(两种八面体和两种四面体)中具有最低的能量，单点能为-6481.4287eV，Ti-He(t1)次之，单点能为-6480.3876eV，在Ti-He体系中氦原子嵌入到o2位置具有更趋稳定的结构。

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。

Besides, application of the atom interferometers to gravitational acceleration measurement and the research of the atom-interferometer gravity acceleration's precision are mainly described.

进一步详细讨论了原子团大小、拉曼脉冲激光尺寸、原子的多普勒频移等因素对重力加速度测量精度的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。