晶格结构

The results of IR and XRD for ground cement components show that grinding aids accelerate breakage of chemical bonds especially of Si—O bond in C〓S mineral, enhance crystal lattice distortion, crystal defect and amorphism, thereby enhancing activity of ground materials.

助磨剂作用下磨细物料的XRD、IR分析结果表明：助磨剂加剧了物料的晶格畸变、晶格缺陷及无定形化，加速了物料结构中化学键的破坏，尤其是C〓S矿物中Si—O键的断裂，从而增加物料的反应活性。

TiO2 is known to exist in three distinct structures: two tetragonal phase for anatase and rutile and a third orthornombic phase for brookite. Rutile has the most stable structure and physical and chemical properties. In rutile structure oxygen cavities move quickly so that rutile has better gas sensing respond and become a chief material use for oxygen gas sensors.

其中金红石结构是最为稳定的晶型，不但具有最为稳定的物理、化学性能，而且在金红石结构中，晶格中氧空位的迁移率较高，因而TiO_2金红石结构气敏响应效应较好，从而使金红石结构TiO_2氧化物材料成为氧敏传感器的首选材料之一。

The Transfer Matrix Method is applied to calculating the transmission properties of two-terminal crystal system and crystal system with ring structure.

应用转移矩阵法计算了两终端晶格系统和带有环状结构的晶格系统的电子输运性质。

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。

An amorphous-like and disordered ZnO with special structure of serious lattice defect and oxygen vacancies was formed after reduction under the reaction condition of CO〓+H〓 due to isomorphous substitution between copper and zinc in the catalyst.

由于催化剂中铜和锌之间的同晶取代现象，使得催化剂在还原和反应状态下形成具有严重晶格缺陷的类非晶态结构的ZnO微晶，并出现一些氧空穴。

It is proposed that the periodic lamella twins can be grown with the aid of this kind of twin structure and it can be applied to acoustic supper-lattice resonancer.

对孪晶形成的可能原因进行了分析，提出了利用该孪晶结构生长周期性聚片孪晶，并应用于声学超晶格谐振器的可能性。

All crystalline structrue has been investigated by XRD, on the basis of which the relationship between dopant dose and lattice constant and the size effect of phase transformation were discussed.

利用XRD研究了掺杂钛酸铅纳米晶的晶体结构，以此为基础讨论了掺杂量与晶格常数变化的关系以及相变的尺寸效应，并研究了掺杂纳米晶的相组成和晶胞参数。

Using the modified analytical embedded atom method, the physical properties of D03 type Fe3Al alloy, including the lattice constant, formation heat, elastic constants, phonon dispersion curves, density of states, molar heat capacity at constant volume, Debye temperature and thermal expansion, were calculated. The calculated results were compared with the experimental data and those obtained by others.

摘 要：应用改进分析型嵌入原子模型，系统地计算了D03 结构Fe3Al合金的晶格动力学性能，包括晶格常数、形成热、弹性常数、声子谱、态密度、摩尔定容热容、德拜温度和热膨胀系数等，并将计算结果与已有实验数据和其他理论计算结果进行了比较。

Furthermore, the experimental k values were used to determine the associated activation energy, Ea, for the formation of La2/3TiO3-type phase using the Arrhenius plot and the following least-square equation, ln =-Ea/RT + A, where T is the annealing temperature, R is the universal gas constant, and A is a constant, resulting in Ea ~ 607 ?

第二部分则是以微观的方式来解析Pb2+离子与La4Ti9O24陶瓷以及La2/3TiO3-type相晶格之间的关系；利用化学共沉法来合成不同Pb2+离子添加量的La4Ti9O24陶瓷起始粉体，再以900 oC /1h的条件热处理；藉由选区电子绕射图谱以及X-ray绕射分析所生成之La2/3TiO3-type相结构；结果显示La2/3TiO3-type相之结晶结构为斜方晶之钙钛矿结构，符合空间群IbmmNo。

There exists isomorphous replacement in the rutile structure, and the most prominent feature is the average content of oxides, being 1.22%, 0.39%, 0.35% and 0.22% for V 2O 5, Fe 2O 3, ZnO and CuO respectively. They substitute Ti 4+ in octahedra. The valence of V is 5, and its polyhedron is trigonal bipyramid, which causes the lattice distortion, breaks the raw octahedron symmetry into square bipyramid, and produces the microstrains in the structure.

天然含钒金红石平均含V2O5可达1.22％，Fe2O30.39％，ZnO0.35％，CuO0.22％，这些金属离子可替代八面体中Ti^4 。V以5价形式存在，配位多面体呈三方双锥，其在晶格内部对Ti的替代导致晶格畸变，打破了配位多面体原有的八面体对称而呈四方双锥的几何形态，并产生结构微应力。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。