The positive charge in the atom is spread over the whole atomic volume. 原子中的正电荷分布在整个原子体积上。
And an atomic volume, it's going to be on the order of1 angstroms cubed. 一个原子体积大约是,一个埃的三次方。
V So let's call our atomic volume little v. 我们把原子的体积称作。
In the case of all CVD diamond deposition methods the formation of atomic hydrogen occurs in a selected volume near the deposition area. 就所有CVD金刚石沉积方法而言,原子态氢的形成发生在沉积区域附近一选择区域内。
SiGe islands with different Si concentrations were grown by UHV/ CVD. The topography and size distribution of islands were characterized by atomic force microscopy. The results show that the critical volume increases with Si concentration, at which the islands change from pyramids to domes. 采用UHVCVD方法生长了不同Si组分的SiGe岛,用AFM对其形状和尺寸分布进行了分析,实验结果表明SiGe岛从金字塔形向圆顶形转变的临界体积随Si组分的增大而增大。
Traditional theory of chemical diffusion in solid states can not describe the relation of diffusion fluxes and diffusion-induced stresses because the research subject of the traditional theory is the diffusing atom or atomic flux, not the volume unit in the interdiffusion field. 传统固体化学扩散理论的研究对象是扩散的原子或原子流,并不关心互扩散区域内微观体积单元的变化,因此无法描述原子扩散流与应力之间的关系。
The calculated results were compared with the experimental ones, and the results show that the calculation of atomic volume and cohesive energy are in agreement with the experimental ones of TiAl metallic compound. 计算结果表明,金属间化合物TiAl的平均原子体积和结合能与实验数据一致。
Study of relationship between the standard entropy of gas main group element and the atomic volume 气态主族元素标准熵与原子体积关系的研究
The radial distribution function, common neighbors, internal energy and volume of the system were recorded during the processes. The atomic internal energy, atomic Voronoi volume and atomic stress field of the relax system were analyzed at zero temperature. 记录了系统能量、体积、径向分布函数及公共近邻的变化,并在0K分析了弛豫后系统原子内能、原子Voronoi体积及原子应力等热力学性质的分布情况。
The order of single bond radii of the three structures during the elevation of temperature is fcc> bcc> hcp, and it is the same order for atomic volume. 温度上升过程中,3种结构的原子单键半径大小顺序为:fcc>bcc>hcp,导致相应的原子体积大小顺序为:fcc>bcc>hcp;
The results show that it is the smallest number of covalent electrons in d state of fcc-Au among that of the three structures that leads to the biggest single bond radii and atomic volume. 结果表明:OA理论得到的fcc-Au电子结构中的共价d电子数最少,从而导致fcc-Au具有最大的单键半径以及最大的原子体积;
A new graphite furnace atomic absorption spectrometric method for direct determination of cop-per and zinc in small volume serum was reported. The volume of serum is only 10 uL. 报道了单用重蒸馏水低倍稀释微量血清(10μL)后,直接采用PE4100型原子吸收仪、HGA700型石墨炉,测定血清中铜、锌浓度的新方法。
The variation of electronic structure leads to the increase of single bond radius and atomic volume and other changes of physical properties. 电子结构的转变是导致原子单键半径增大和体积增加及其他物理性质发生改变的根本原因。
As for composites ( V/ Ti atomic ratio being 0 、 0.1 、 0.2) containing approximately the same volume fraction., the bending strength raised with the average grain size of carbide decreasing. 对于V/Ti原子比为0、0.1、0.2的复合材料,碳化物的体积分数基本相同,当碳化物的体积分数一定时,随着碳化物颗粒平均粒度的减小,抗弯强度增大。
Adopt the nitric acid-perchloric acid chemical digestion method, digest the specimen to be tested into the liquid state, and measure Ag content of the tissue with the atomic absorption method upon the constant volume. 采用硝酸-高氯酸化学消化法,将待测标本消化为液态,用原子吸收法测定组织中银的含量。
This also applies for other physical properties of metallic glasses, e.g., viscosity and atomic diffusivity. which may change by orders of magnitude with the variation of free volume. 金属玻璃的某些物理性质也与自由体积密切相关,比如说,自由体积的改变会使系统粘滞系数或者扩散系数发生几个数量级的变化等等。