查询词典 tetragonal

Super-fine K-doped Li2ZrO3 powders were synthesized via the citric acid-ethylene glycol complexing, with the nitrates of lithium, zirconyl and potassium as the materials. Then, the precursor of K-doped Li2ZrO3 and the K-doped Li2ZrO3 powders were characterized by means of TG-DSC, XRD and SEM. Moreover, the thermal decomposition of the gel and the formation of the tetragonal crystalline form were analyzed.

采用柠檬酸－乙二醇络合法，以硝酸锂、硝酸氧锆、硝酸钾为原料制备了掺钾Li2ZrO3超细晶体粉末，采用TG-DSC、XRD、SEM等方法对掺钾Li2ZrO3的前驱体及掺钾Li2ZrO3晶体粉末进行了表征，分析了凝胶的热分解变化过程和四方晶形结构的形成过程。

K-doped Li2ZrO3 super fine powder has been synthesized by citric acid-ethylene glycol sol-gel method using the nitrates of lithium, zirconyl, potassium as starting materials. The precursor of K-doped Li2ZrO3 and the powder of K-doped Li2ZrO3 have also been characterized by TG-DSC、XRD、SEM measurements. The decomposition of the gel and the formation of the tetragonal crystalline form were analyzed.

采用柠檬酸-乙二醇络合法，以硝酸锂、硝酸氧锆、硝酸钾为原料制备了掺钾Li2ZrO3超细晶体粉末，采用TG-DSC、XRD、SEM等手段对掺钾Li2ZrO3的前驱体及掺钾Li2ZrO3晶体粉末进行了表征，分析了凝胶的热分解变化过程和四方晶形结构的形成过程。

The calculations indicate that Co should be inside of Ge〓, and bicapped tetragonal antiprism structure with D〓 symmetry is found to be the most stable structure of the cluster anion CoGe〓, which has the higher bonding energy and embedding energy.

激光双重烧蚀反应表明Co原子不在Ge〓团簇的外表面，量子化学计算表明，Co原子应在Ge〓团簇的内部，具有D〓对称性的双戴帽反四棱柱构型是幻数团簇离子CoGe〓势能面上的最低点，且具有较低的结合能和内包覆能。

Magic number CoGe10(superscript -), CoSn10(superscript -) and CoPb10(superscript -) may have bi-capped tetragonal antiprism structure and CoPb12(superscript -) is icosahedral structure.

幻数离子CoGe10、CoSn10和CoPb10可能具有双帽四角反棱柱结构，而CoPb12可能具有二十面体构型，钴原子均为笼状结构的中心。

The cluster reconstructs from tetragonal bipyramid to edge-cappedtrigonal bipyramid.

吸附后的〓从原来的正方形底双金字塔结构，重构而变成了边覆盖三角形底双金字塔结构。

The copper ions showed four different coordination numbers and geometrical structures. 4 coordination, planar quadrangle; 5 coordination, tetragonal pyramid; 6 coordination, octahedron; 7 coordination, triagonal bipyramid.

晶体结构分析表明，该配合物中存在 [Cu2]2+、[Cu2(H2O)]2+和[Cu6(H2O)65Cu24]4-三种配位离子，铜原子呈现四种不同的配位数和几何构型，它们是：4配位的平面四边形；5配位的四方锥型；6配位的八面体型；7配位的三角双锥型。

Two isologous red crystals of the title compound, prepared in two methods from the reaction of Cut and 4,4'-bipyridine (4,4'-bipy) in solution, were structurally characterized with monoclinic C2/c (1) and tetragonal I4(subscript 1)/acd (2) space groups.

碘化亚铜和4，4'-二联吡啶在溶液中反应的二种方法可制备出标题化合物的2个不同红色晶体，结构表征出两种晶体分别是单斜C2/c(1)和四方I4(下标 1)/acd(2)空间群。

Two isologous red crystals of the title compound, prepared in two methods from the reaction of CuI and 4,4′-bipyridine (4,4′-bipy) in solution, were structurally characterized with monoclinic C2/c (1) and tetragonal I41/acd (2) space groups.

碘化亚铜和4，4′-二联吡啶在溶液中反应的二种方法可制备出标题化合物的2个不同红色晶体，结构表征出两种晶体分别是单斜C2/c(1)和四方I41/acd(2)空间群。

The (1-x) PMN-x PT system has a morphotropic phase boundary separating the tetragonal and rhombohedral phases. The MPB is located in the vicinity of x=33%.

PMNT系统存在着一条铁电菱方-铁电四方准同型相界，它的化学组成在067PMN-0.33PT含量为33％附近。

The crystal structure of NKN-LN and NKN-LT ceramics was investigated by XRD analysis, and the morphotropic phase boundary of the ceramics was also determined. It is revealed that the perovskite structure of NKN-LN ceramics transforms from orthorhombic phase to tetragonal phase when the LN content is 6%.

确定了体系的准同型相变的成分点，发现NKN-LN体系中随着LN增加在其含量达到6％时体系由正交相转变为四方相；NKN-LT体系在LT含量5％～7％范围内由正交相转变为四方相。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。