查询词典 diagonal

Computing inverse matrix, a unit entrainment in the matrix behind the matrix, and then in front of it is processed into a matrix, diagonal matrix, the latter matrix that is the inverse matrix.

详细说明：计算逆矩阵，在矩阵后面夹带一个单位矩阵，然后把前面那一个矩阵处理成对角线单位矩阵，后面的那个矩阵就是逆矩阵。

This paper presents natural vibration experiment and sine excitation experiment of the frame with different energy dissipation braces （the little character brace or the unidirectional diagonal brace or the little- character-toggle-brace）and compared their capability of energy dissipation.

介绍了空框架以及附加单向斜撑、小八字撑以及小八字曲拐撑的4种结构的自由振动试验以及正弦稳态激振试验，比较了其消能能力。

Edited by Terence Dickinson, author of 14 books, including NightWatch and The Backyard Astronomer's Guide, a subscription to SkyNews ensures that you will stay abreast of the latest developments in the world of astronomy, enjoy expert advice on astronomy-related equipment, receive discounts to museums and space centres across North America and have a chance to WIN your very own Black Diamond ED80 telescope from Skywatcher, including a 2" 90 Dielectric Diagonal with 1.25" adapter and quality foam-lined metal carrying case.

由包括 《NightWatch》和《The Backyard Astronomer's Guide》等14本书的作者Terence Dickinson编辑本杂志。保证让你走在世界天文学的发展前沿，享受天文学专家咨询有关设备的建议。可以得到博物馆和北美空间中心商品目录并有机会赢取属于您自己的黑钻石ED80望远镜，其中包括2" 90 °角的介质1.25"适配器和泡沫内衬金属手提箱

Edited by Terence Dickinson, author of 14 books, including NightWatch and The Backyard Astronomer's Guide, a subscription to SkyNews ensures that you will stay abreast of the latest developments in the world of astronomy, enjoy expert advice on astronomy-related equipment, receive discounts to museums and space centres across North America and have a chance to WIN your very own Black Diamond ED80 telescope from Skywatcher, including a 2" 90o Dielectric Diagonal with 1.25" adapter and quality foam-lined metal carrying case.

由包括 《NightWatch》和《The Backyard Astronomer's Guide》等14本书的作者Terence Dickinson编辑本杂志。保证让你走在世界天文学的发展前沿，享受天文学专家咨询有关设备的建议。可以得到博物馆和北美空间中心商品目录并有机会赢取属于您自己的黑钻石ED80望远镜，其中包括2" 90 °角的介质1.25"适配器和泡沫内衬金属手提箱

Chapter 2 is devoted to the discussion of the asymptotic synchronization of par-tially coupled Lorenz systems with the external coupling matrices being n×n irreduciblesymmetric real matrices having zero row sums and nonpositive off-diagonal elements.

在第二章我们讨论了当外部耦合矩阵是n×n阶实对称不可约，行和为零且对角线以外的元素非正的矩阵时部分耦合非恒同Lorenz方程格点系统的渐近同步问题。

Under the conditions that the external coupling matricesare n×n irreducible symmetric real matrices with zero row sums and nonpositive off-diagonal elements, asymptotic synchronization occurs if the coupling strength exceedsa critical value.

第三章主要讨论非恒同的单摆振子系统，讨论了外部耦合格式矩阵是n×n阶实对称不可约，行和为零且对角线以外的元素非正的矩阵时系统的解的渐近同步性。

Let A be a nonsingular nth-order real matrix, then cond_p =||A||_p||A~(-1)||_p =1(p= 1,∞), if and only if A = cpσ, where c is a positive constant, p is a permutation matrix, or is a diagonal mat...

设A为n阶非异实矩阵，则矩阵A的求逆p-范数条件数等于1的充要条件为A=cpσ，其中c为正常数，σ是置换阵，其对角元都等于+1或-1。

And in the second part, we consider the following four inverse eigenproblems: the reconstruction of normal five-diagonal matrix by two or three ordered eigenvalues and cor...

第二个部分则讨论四类矩阵逆特征值问题：在考虑给定的两个或三个特征值次序的情况下构造唯一的规范五对角线矩阵：由三个给定的特征值和相应特征向量来构造唯一的实对称三对角线矩阵和不可约实对称三对角线矩阵。

This approach is base on the following idea:under not effect to the deformation of rectangular pipe,to change right angle to obtuse angle which is variant as some regular,make plain-barreled roll pass receive vertical roll shape pipe blank,and then let pipe blank entering into vertical roll pass.With continuous deformation, the difference between diagonal line of rhombus pass will be reduced to zero,finally changed into a square.

该方法的基本思路是：在不影响方矩形管变形的前提下，通过将孔型顶角由直角改为按一定规律变化的钝角，让呈卧菱形状的平辊孔型接纳呈立菱形状的管坯，接着让卧菱形状的管坯进入立菱形状的立辊孔型，随着变形的继续，逐渐缩小菱形孔型对角线之差直至为零，成为正方形。

For example, reflecting telescopes are still built with paraboloidal primary mirrors, which have interchangeable flat diagonal mirrors and hyperboloidal secondary mirrors, with a focuser installed both at the Newtonian focus and the Cassegrain focus.

例如，同样是抛物面反射望远镜，然而安装了可切换的45度反射镜与双曲面副镜（注：分别对应于典型的牛顿与卡塞系统），且在牛顿和卡塞焦点都装有成像设备。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。