查询词典 hexagonal

The aim of this paper is to synthesize nano-particles of barium ferrite with hexagonal flake and acicular and to study the effect of the different geometrical samples on microwave-absorbing performance.

本文目的是通过合成纳米级六角片状和纳米级针状钡铁氧体样品，研究这两种几何样品对微波吸收性能的影响。

Electroless Co-Ni-P thin film as-deposited was amorphous possessing smooth surface. The film was crystallized after heat treatment at 300℃ for 1 hour, and the surface of film was composed of "taper humps". When the film was heated, phase of Co2P deposited from the solid solution and allotropic transformation took place from hexagonal close-packed system to face-centred cubic lattice.

摘 要：化学镀Co-Ni-P薄膜镀态下为非晶态结构，表面较为平整；经300℃×1h热处理，发生了晶化转变，表面由&圆锥峰&所构成；随加热温度的提高，镀层析出了Co2P相，并发生了由密排六方结构的α-Co向面心立方结构的β-Co的同素异构转变。

The heterogeneous W-HMS catalyst was in-situ prepared by immobilization of tungstic acid on hexagonal mesoporous silica. It was used to synthesize glutaraldehyde from cyclopentene.

采用原位合成法将W(上标 6+)引入六方介孔全硅分子筛骨架中，制备了应用于环戊烯催化氧化合成戊二醛反应的W-HMS催化剂。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法，制备出了孔径在20-150nm之间可调和具有不同孔结构（如Y形、树枝状、锯齿状）的系列多孔氧化铝模板，在此基础上，利用电化学沉积、气相催化生长和化学控制腐蚀等方法，成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系，探索了基于模板孔壁内沿生长一维结纳米材料的机制，较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能，为低维纳米材料器件化提供了实验基础。

It is found that the bright points distributed regularly adjacent to main facular is spectral distribution on the focal plane of the array of lens when the laser irradiates a hexagonal aperture,rather than what is induced by stray light.

结果表明，主光斑附近规则分布的亮点并不是由杂散光引起的，而是激光辐照六边形光阑，在透镜组焦平面所成的频谱分布。

Products bottom posted hexagonal hole mesh has many good characters, such as resitance to acid and alkali, fadeless, fire retardant and easy to clean.

产品底贴六角孔网布，具有耐酸碱、永不褪色、阻燃、易于清洁等诸多特点。

At the centre of the macula is the foveal pit where the cones are smallest and in a hexagonal mosaic, the most efficient and highest density.

斑点中心的中心窝的视锥细胞最小，它们排列成六角形。

Foreign atoms were placed over the sheet at several symmetrical positions, namely, over a carbon atom, over a C-C bond, over the center of a pentagonal, hexagonal, and heptagonal ring. The following conclusions have been drawn: The cohesive energy of adsorbate and perfect sheet at all three adsorption sites is always lower than that on a sheet with a Stone-Wales defect embedded at all five sites.

得到的主要结论如下：所有外来原子在含有Stone-Wales缺陷的石墨烯片上不同位置上吸附的结合能都大于在其在完整石墨烯片上不同位置上的结合能，因此在碳管中引入Stone-Wales缺陷能够提高原子在碳管上的吸附能力，同时提供了很多稳定的吸附位置。

Erbium-doped holey fiber with hexagonal lattice was modeled by using effective index method.

六角点阵的掺铒多孔光纤是通过采用有效折射率法建模的。

METHODS: Ahmed glaucoma valves were implanted in 34 eyes of 34 patients with refractory glaucoma. Density and morphology of corneal endothelial cells were evaluated in the superotemporal, superonasal, infratemporal, infranasal, and central corneal areas to calculate mean value of total cornea before and at 3 and 6 months after surgery. Percentage of hexagonal cells was statistically summarized.

在34例(34眼)疑难青光眼患者眼球颞上象限行Ahmed青光眼阀植入，移植前及移植后3，6个月对角膜中央、颞上、颞下、鼻上及鼻下区内皮摄像后测定分析，得出角膜内皮细胞密度，并取全角膜平均值，同时观察角膜内皮细胞形态变化，统计六角形细胞所占比例。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。