查询词典 hexagonal prism

It also a new generation II-VI compound semiconductor with direct wide-band gap and a hexagonal wurtzite structure.

氧化锌还是新一代宽禁带、直接带隙的多功能Ⅱ-Ⅵ族六方纤锌矿结构半导体材料。

Because the properties of the hexagonal boron nitride particles are much different from those of the yttria powders,resulting in some problems in process of preparing the hBN shell mould .

在型壳制备过程中除了使用氮化硼作为面层造型材料外，用钇溶胶作为粘结剂，同时通过加入少量的氧化钇来改善氮化硼基复合型壳的性能。

ZnO green phosphors with hexagonal wurtzite were prepared by thermal oxidization of zinc sulfide and zinc chloride.

摘 要：在氯化锌存在下，通过硫化锌的热氧化制备具有六方纤维锌矿结构的氧化锌绿色荧光粉；研究煅烧温度对荧光粉的激发光谱和发射光谱的影响并测定了荧光粉中硫、氯元素含量。

Highly ordered mesoporous Zr-Ce-SBA-15 silica with hexagonal-platelet morphology was synthesized through a hydrothermal route by using pluronic P123 as a template, tetraethyl orthosilicate as a silica source, zirconyl chloride and cerous nitrate as a precursor. The main strategy of this method was to utilize the acidity self-generated from the hydrolysis of inorganic salts in the aqueous solutions, where no addition of mineral acids was necessary.

以P123为模板剂，正硅酸乙酯为硅源，氯化氧锆和硝酸亚铈为无机前驱盐，在不外加无机酸的条件下，利用无机前驱盐自身水解产生的弱酸性环境，通过水热合成路线一步合成了具有大的径轴比、短孔道、六方板状形貌的Zr-Ce-SBA-15介孔材料。

The best method and condition of preparing barium ferrite nano-particles with hexagonal flake and with acicular were discussed.

然后对这两种样品进行了电磁参数和反射率的测试。

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。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。