查询词典 lattice constant

The evolution of strain energy with the aspect ratio (length/width) of the epitaxial structures was found to be affected by the height, the elastic constant of the substrates and the epilayers, and the symmetry of the lattice mismatch of these structures.

我们发现磊晶结构应变能随长宽比变化的方式将受到结构的高度、磊晶薄膜和基板的弹性系数、及晶格的对称性所影响。

We employ ab initio plane-wave pseudopotential density functional theory to calculate the coordinate,the equilibrium lattice parameters,bulk modulus,shear modulus and elastic constant,and those calculated results agree well with the other experimental data and the theoretical data which have been published.

本文采用平面波赝势密度泛函理论方法计算了PtN2的坐标、平衡态的晶格常数、体模量、剪切模量和弹性常数，计算结果与已有的实验值和理论值吻合较好。

We also study the relation between the dielectric constant and lattice distortion of the PT tetragonal and cubic phase region.

我们还研究了PT四方相区和立方相区介电常数与晶格畸变的关系。

The work of this paper is mainly to deeply study the relation between the dielectric constant and lattice distortion of PZT and PT, based on their thermodynamic theory.

本文的工作是在PT和PZT热力学理论基础上从结构相变的角度深入地研究PT和PZT介电常数与晶格畸变的关系。

Lattice constants a stays constant and c is inclined to decreasing.

晶格常数a基本不变，而晶格常数c有减小的趋势。

Thence , the direct relation between the dielectric constant and the lattice distortion c/a can be attained.

根据相关实验数据确定方程中的物理参数。2。

Based on the lattice dynamics with force-constant matrix, we investigated the vibrational properties of GaAs/AlAs superlattice.

主要内容包括：一、采用基于力常数的晶格动力学方法研究了超晶格GaAs/AlAs晶格振动性质。

In range of 300℃～900℃, all the transition metal oxide catalysts could get high ammonia conversion, during the initial stages of the reaction, the SO〓 conversion is relatively low since the catalysts have not been sulfureted, but it increases gradually and attain constant with rising temperature and time continuance,〓 is better than other catalysts in reactivity and elemental sulfur selectivity; XRD indicates that, in the SO〓-SCR process, stable transition metal sulfide is generated which is very important to SO〓 reduction and transition metal sulfide probably is the active phase of catalyst, further the reduction of SO〓 by H〓 to H〓S is the limiting step of all process, then the activity is somewhat related to its lattice oxygen yet not so notable; XPS indicates that little sulfur on surface exists as S〓 in sulfate, showing that TiO〓 could restrain the generation of sulfate.

对于过渡金属氧化物催化剂的研究发现，在300℃～900℃范围内，不同的催化剂均可获得很高的NH〓转化率，反应初期由于催化剂还未硫化，所以SO〓的转化率较低，随着温度升高和反应时间的延续，SO〓的转化率逐渐升高并达到了稳定值；七种过渡金属氧化物中，以〓对于NH〓还原SO〓反应的活性和选择性最好；XRD结果表明在NH〓-SO〓反应后生成了稳定的硫化物相，硫化物对SO〓的还原过程具有重要作用，催化剂的活性相可能是过渡金属硫化物，而且在硫化物催化剂上进行的H〓还原SO〓生成H〓S的反应是整个过程的速率控制步骤，所以催化剂的活性与其自身的晶格氧的氧化还原能力有一定的联系，但关系不明显；XPS结果表明催化剂表面的硫大部分以过渡金属硫化物的形式存在，只生成少量的S〓，说明TiO〓催化剂能够较好的抑制硫酸盐的生成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。