数

Hamilton discovered the quaternion ,to the middle period of last century,the application of the quaternion and the quaternion matrix are discovered widely in geostatics,the theory of ped-top using, strap-down inertial ,naviation, enginery and organ,robot technology and artificial satellite attitude control,and so on.

R。 Hamilton发现四元数到上世纪中叶，四元数和四元数矩阵方法在刚体动力学、陀螺使用理论、捷联惯性导航、机器与机构、机器人技术、人造卫星姿态控制等领域应用非常广泛。

Newspaper puzzle challenge - Newspaper Puzzle Challenge is the ultimate puzzle test featuring 8 different types of play including: Sudoku, Kakuro, Killer Sudoku, Giant Sudoku, Sudoku X, Mini Sudoku, Crosswords and more!

报纸益智挑战-报纸益智的挑战是最终的益智测试具有8个不同类型的发挥，包括：数独，数，杀手的游戏，巨人的游戏，数独X的小游戏， c rosswords和更多！

Description : Newspaper puzzle challenge sudoku - Newspaper Puzzle Challenge is the ultimate puzzle test featuring 8 different types of play including: Sudoku, Kakuro, Killer Sudoku, Giant Sudoku, Sudoku X, Mini Sudoku, Crosswords and more!

描述：报纸的挑战益智游戏-益智报纸面临的挑战是最终益智测试具有8个不同类型的发挥，包括：数独，数，杀手的游戏，巨人的游戏，数独X的小游戏， c rosswords和更多！

A definition of "Kernel" is given first. Algorithm axioms, algorithm rules of interval grey numbers and new algebraic systems are built based on the "Kernel" and the degree of greyness of grey numbers. And the properties of the algorithm are studied.

首先给出了灰数"核"的定义，基于"核"和灰数灰度建立了区间灰数运算公理、运算法则和新的灰代数系统，并研究了运算性质。

Harmonic mean : A special kind of mean which is determined by calculating the mean of the reciprocals of the values concerned and then calculating the reciprocal of this quantity.

调和平均数，倒数平均数：一种特殊的均数，求得方法是先求出有关倒数的均数，再求出这一均数的倒数。

Harmonic mean : A special kind of mean which is determined by calculating the mean of the reciprocal s of the values concerned and then calculating the reciprocal of this quantity.

调和平均数，倒数平均数：一种特殊的均数，求得方法是先求出有关倒数的均数，再求出这一均数的倒数。

Based on the methods of Hausdorff fractal dimension and space relation fractal dimension ,the paper advances calculation models on the fractal dimension and the arriving degree of network of Liaoning s highway network.

分析了辽宁省公路交通网络的基本现状，根据分形理论，利用Hausdorff维数简化算法和空间关联维数的计算方法，测算了以省内国道干线为基础的辽宁省公路交通网络的分维数和网络直通度。

Consequently, a series of important topological indices such as σ-index(Merrifield-Simmons index), Clar number, the number of Kukule structures, and the first Herndon number are obtained.

给出了他们对应的独立集多项式和Clar覆盖多项式的简单显式表示，进而从中获得了一系列重要的拓扑指标：σ-指标(Merrifield-Simmons指标)，Clar数，Kekule结构数和第一Herndon数。

You can think of an identity matrix for matrices as being the number 1 for scalars, or regular numbers.

你可以把一个单位矩阵认为是数字标量1或者是一个正规数。1乘以任何数还是等于数本身。

Based on a brief review on developments of number system, a new developed pattern is proposed. The quaternion is extended to a matrix form aI+bA+cB+dC, in which the identity matrix I and three special matrices A, B, C correspond to number 1 and three units of imaginary number i, j, k, respectively.

在数系发展的基础上，提出了一种新的发展模式：四元数推广为矩阵形式aI+bA+cB+dC，其中单位矩阵I和3个特殊矩阵A，B，C分别相应于数1和虚数单位i，j，k。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。