查询词典 polyhedron

In order to solvepiecewise algebraic varieties, we propose a new method to compute an algebraic varietyon a convex polyhedron by adding hyperplanes with the method of Groebner bases. Thus,the algebraic variety on the convex polyhedron is transformed to the positive solutionsof a system of polynomials. Besides, the minimal decomposition is also obtained.

通过添加超平面技巧将Groebner基方法应用到凸多面体内任意维代数簇的计算上，从而把凸多面体内的代数簇转化为另外一组多项式方程组的正解，并且得到了该代数簇在凸多面体内的极小分解。

The results show that the glass-ceramics with fibroid structure is produced after definite heat treatment, the main crystallization phase is hedenbergite and anorthite is the minor crystallization phase. The optimal process of heat treatment shows as follows: the nucleation temperature is 850 ℃ and hold time is 100 min, and the crystallization temperature is 980 ℃ and hold time is 80 min. With increasing heat treatment temperature, the FT-IR absorption bands appear obvious split, the aluminum-oxide polyhedron in the glass network changes from [AlO4] to [AlO6]. The titanium ion in the glass network gradually transforms to the 6-coordinated, moreover forms minicrystal of MgTi2O5 and Fe2TiO4 which provides the position of heterogeneous nucleation for the growth of crystal.

结果表明：在一定的热处理条件下可以以基础玻璃制备出主晶相为钙铁透辉石，次晶相为钙长石的纤维状结构的微晶玻璃；最佳的热处理工艺为：850 ℃核化100 min，980 ℃晶化80 min；随着热处理温度的升高，红外吸收带发生明显的分裂；玻璃结构中的[AlO4]向[AlO6]转化；网络结构中的钛离子逐渐转变为六配位，形成微晶相——钛酸镁和钛铁晶石，为晶体的生长提供非均匀形核位置。

It is shown that the enroll decision is being maked in a barycentric coordinates system of property polyhedron that can contain both of the psychological barycenter of theachcrs and the matriculates.

它是对笛氏坐标施行"截取"和"压缩"操作后构建起来的。它提供了刻划主体心理感觉的度量化标准和描述判断决策过程的思维——数学坐标，是存在于人类心理上的一个认知结构。

Cognitive psychology ; cognitive structure ; noctic science ; property polyhedron ; barycentric coordinates ; matriculation.

认知心理学；认知结构；思维科学；性质多面体；重心坐标系；高考分析；非单调推理；知识表示

PURPOSE: To explore how to apply polyhedron method and bisection method reasonably in teaching by comparing the two carving methods for triple-sized plaster tooth.

目的：比较3倍大石膏牙雕刻的2种方法，探讨在教学中如何合理应用2种方法。

The Monte Carlo integration that the domain of integration is curved or complex connected curved polyhedron and the integrand has singular points is discussed in this chapter.where G is the domain of integration that is the curved polyhedron, and X P,where G, G,(i = 1,2,...s) is the domain of integration thatis the curved polyhedron,Chapter 3 Deals with the computer simulation on the multiple random current and LIFO multiple service desks mixed queuing system modles in discrete event system.

Z，为。厂的奇异点，且、训方」 SZ；。G一U乓，：一'，2，第三章讨论了多随机顾客流且后进先出的先有Ul个服务台并联，然后有 V个服务台串联，最后有UZ个服务台并联的串并联混合和先有 Vl个服务台串联，然后有U个服务台并联，最后有VZ个服务台串联的串并联混合多服务台排队系统模型的计算机模拟。

It can be solved in O(n 2) time for single convex polyhedron obstacle (here n is the total number of vertices of polyhedron).

文章主要研究了k＝ 2情形下的最短路问题，提出一个在O（n2）时间内解决该问题的算法。

According to the viewpoint of combination tope, any convex polyhedron can be composed of some simplexes, and both convex polyhedron and simplex are important concepts of programming theory, so it's necessary to find their volumes in some calculations.

由组合拓扑学可知，任意凸多面体均为若干个单纯形的某种组合，两者均为规划论中最重要的基本概念之一，因而在一些计算中对其求积是不可少的。

The authors present a new algorithm in this paper. Firstly, a vector pointing from one polyhedron to the other is picked. Then the authors start to find an intersection plane of one polyhedron based on the scalar product of the norm vector of the plane and the picked vector.

就这一问题，给出了一种新的算法，其思想是取一个从一个凸多面体指向另一个多面体的向量，根据两个多面体中的面与这一向量的相对位置关系来寻找相交的平面。

Polyhedron -base Structure,which consists of space-filling polyhedron models,is a new type of space structure.

多面体空间结构是一种新型的空间结构类型，基于能够填充三维空间的多面体模型而构成。

Next time I see you,I shall give you a black eye.

下次我看见你，我会打你一顿。

In this paper,design scheme of classification system of wood surface color is established.

提出了木质板材颜色分类的系统设计方案。