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A numerical method for solution of multigroup neutron integral transport equation in two-dimensional hexagonal geometry has been s...

本文首先研究了在二维六角形几何情况下，多群中子积分输运方程的数值解法，建立了完整的理论模型及数值方法。

A numerical method for solution of multigroup neutron integral transport equation in two-dimensional hexagonal geometry has been studied in the first part of the dissertation.

本文首先研究了在二维六角形几何情况下，多群中子积分输运方程的数值解法，建立了完整的理论模型及数值方法。

A two dimensional hexagonal geometry multigroup nodal theory code SIXTUS\|2 is used for core diffusion calculation.

软件包中栅元计算采用了WIMS D 4程序，堆芯扩散计算程序采用了二维六角形节块程序SIXTUS 2。

A new flux expansion nodal method was developed to solve three-dimensional multigroup neutron diffusion equations in hexagonal-z geometry. The method expands the intranodal homogeneous flux distributions in analytic basis functions for each energy group.

提出了一种在三维六角形几何节块内数值求解多群中子扩散方程的节块法，该方法把节块内各群中子通量分布用解析基函数近似展开。

Zinc Oxide is an II-VI n-type compound semiconductor with direct wide-band gap, and a hexagonal wurtzite structure.

氧化锌作为一种多功能的Ⅱ～Ⅵ族宽禁带化合物n型半导体材料，具有六方纤锌矿结构。

Hexagonal wire mesh, weld wire mesh, square wire mesh, window screening, chain link fence, Euro fence, common nail, umbrella roofing nail, cement nail, pneumatic nail and nailer.

7B58 六角网，电焊网，放眼网，窗纱，菱形网，荷兰网，普通圆钉，瓦楞钉，水泥钉，气动排钉，卷钉及钉枪。

Since the fearless ancient sailors brought branches of grape from the Nilotic valley and Crete to Greece, Sicile and south Italy, again thereout to France, grape's planting and vinification has been meliorated and carried forward by generations in this hexagonal soil.

自从古代英勇无畏的水手把葡萄树枝从尼罗河的山谷和克里特岛带到希腊、西西里和意大利南部，再由此传入法国之后，葡萄的种植和酿酒技术在这块六边形的国土上得到了一代又一代人的改良、提升和发扬光大。

Ordered macroporous SiO2 balls, exhibiting spherical structure with 200nm hexagonal-pores, have been successfully obtained by sol-gel templating method using the colloidal crystal balls consisting of the monodisperse modified polystyrene latex particles, which have been assembled into polymer opaline balls.

采用乳液聚合法合成了单分散改性聚苯乙烯乳胶粒，利用PS乳胶粒自组装制得胶体晶体微球，通过溶胶－凝胶模板法制备了有序大孔SiO2微球，通过SEM对改性PS乳胶粒、胶体晶体微球和有序大孔SiO2微球表面形貌进行了表征。

Then the materials were characterized by XRD, FT-IR, SEM, thermogravimetric analysis, and N2 adsorption-desorption experiments. It turned out the sample possessed ordered hexagonal mesoporous channels, high specific surface area of 1207 m2/g, high specific pore volume of 1.03 cm3/g and narrow pore distribution between 2~3nm.

通过 X 射线衍射、傅立叶转换光谱、扫描电镜、热重及低温氮气吸附-脱附试验等测试方法对样品进行了表征，表明该条件所合成的样品具有规整有序的六方介孔孔道，较大的比表面积(1207m2/g)和比孔容(1.03cm3/g)，孔径大小分布窄(2～3nm)，为高质量的 MCM-41 介孔分子筛。

Growth rates of between 0. 25 and 1. 3μm/min were reported with the C axis of hexagonal ZnO grown on(0112)-oriented Al2O3 lying in the plane of the film.

据报道，在（0112）取向的Al2O3衬底上生长C轴位于薄膜平面上的六角晶体ZnO的情形中，其生长速率在0.25μm／min和1.3μm／min之间。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。