正六面体

After the other. The subject discuss Auto end-lock carton shaping condition, changing way, agglutinate angles and agglutinate complementary angle, analysis five type Auto end-lock carton structure, they are rectangular parallelepiped, vertical rectangle-terrace, prismoid, non-conventional type. By analysis discovery some discipline of Folding carton of Auto end-lock.

先后讨论了折叠纸包装自锁底结构的成型先决条件、折叠纸包装自锁底结构的变化方式、粘合角与粘合余角计算，并对直角六面体、棱台型、正六棱柱型、异棱柱、异型五种折叠纸盒自锁底结构进行分析，归纳出折叠纸包装自锁底结构的一般规律。

Based on hexahedra vector finite element in ANSYS,a new orthogonal-reinforced hexahedra vector element is created by modifying vector basis functions.Due to orthogonality of sampling nodes and orthogonality of integral simultaneously,the new vector element can strengthen diagonal elements' predominance and quicken speed of solving system question group.

在ANSYS采用的六面体矢量单元的基础上，对矢量基函数作了一些增强正交性的修改，使其同时具备采样点正交性和积分正交性，得到了一种新的正交增强六面体矢量单元；这种新单元能增强系统矩阵的对角占优特性，加快系统方程组的求解速度。

For analyzing the state of one C point,one small positive parallel hexahedron is taken out from the point.

A y 图1 - 5 (1)为了分析一点的应力状态，在这一点从物体内取出一个微小的正平行六面体，各面上的应力沿坐标轴的分量称为应力分量。

We obtain three classes of polyhedra which have high symmetry. they are regular tetrahedral class belonging to tetrahedral group , regular hexahedral class and regular octahedral class belonging to octahedral group.

本文将Goldberg在正十二面体上构筑多面体的方法推广到其它柏拉图多面体上，分别得到了三类具有较高对称性的多面体：属于四面体群的正四面体类和属于八面体群的正六面体类、正八面体类。

The extended two-dimensional outer boundary of a three-dimensional object.

正方形是二维的，而正六面体则是三维的。

From the lamella shown in Fig.2-1,we take out a small and positive parallelepiped PABC,and take for an unit length in the directional dimension in z.

从图2-1所示的薄板取出一个微小的正平行六面体PABC(图2-3)，它在z方向的尺寸取为一个单位长度。

Because of the grid division adopted the approximate regular hexahedron unit,the displacement function adopted the as high as 9th ordered polynomial function the high pre...

由于网格划分采用了近似正六面体单元，位移函数采用了高达9次的多项式函数，通过自适应收敛的方法，得到了高精度的收敛结果。

The error model identification of accelerometers on a azimuth strapdown platform system is also concerned in the dissertation. The composite 14 position test plan of the regular hexahedron and octahedron is provided, and identification results are obtained by using improved progressive regression algorithm.

本文实验研究了方位捷联平台系统加速度计误差模型辨识方法，根据最优试验设计理论设计了正六面体和正八面体组合十四位置试验计划，并用改进的逐步回归算法给出了辨识结果。

We obtain three classes of polyhedra which have high symmetry.

本文将Goldberg在正十二面体上构筑多面体的方法推广到其它柏拉图多面体上，分别得到了三类具有较高对称性的多面体：属于四面体群的正四面体类和属于八面体群的正六面体类、正八面体类。

By taking ortho-hexahedron as the basic form of abrasive grains that are distributed randomly on the grinding wheel base, the model of virtual grinding wheel is built. Mathematic model of interference between the abrasive grains and the workpiece is given.

以正六面体作为磨粒的基本形态，并将该磨粒随机分布在砂轮基体上，建立虚拟砂轮的仿真物理模型以及磨粒与工件接触的数学模型。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。