查询词典 algebraic geometry

Working with the energy matching principle, the algebraic method is presented to establish the periodic relative motion condition, that is, the orbit constraint for the formation designing and station keeping.

基于能量匹配原理，提出了一种只需进行代数运算，就可确定编队卫星周期性相对运动条件，即轨道约束的的新方法。

Wikipedia defines a matrix as "a rectangular table of numbers or, more generally, of elements of a ring-like algebraic structure."

Wikipedia把一个矩阵定义为&一个矩形阵列，由数组成，或更一般的，由某「环」中元素组成&。

Third, the algebraic specifications are used in order to reveal the essentials of denotational semantics and to get more modularity and less complexity. Chapter 2 introduces the basic concepts and notations used in this dissertation.

三是采用代数规约的框架，这有助于揭示将语法作为多类基调代数的型构定义，将程序作为表达式的指称语义方法之实质思想，也有助于形式定义文本的模块化，降低描述复杂度。

On condition that there exist weak excitations in the two-component BEC, the SO (3, 2) Lie algebraic description still work. The eigenstates and energy-gap equation have been obtained.

对存在弱激发的双分量BEC，SO（3，2）代数方法仍然近似有效，我们由此求得了系统的本征态和弱激发能隙方程。

Leibniz also freely invoked mathematical entities he called infinitesimals, manipulating them in ways suggesting that they had paradoxical algebraic properties.

莱布尼茨自由运用他称之为&无穷小&的数学单位，并以各种他们相悖的代数性质进行运算。乔治？

As a consequence of an important theorem of algebraic topology, the invariants constructed by those diversity ways can be considered as identified via their unique isomorphisms. This concludes that the procedure of invariant construction gains a virtue of the model presented in this paper as being unrelated to whether there exists a symbolic represantation of images.

根据代数拓扑的重要定理，这些不同的构造方法所得的不变量在同构意义下是等价的，因此我们推论这种不变量的构造过程与图象是否有符号表示无关。

To obtain the hyperfine structure and A-doubling parameters from the high-resolution spectra of novel free radicals directly, a set of algebraic formulae were developed to analyze the spectra with hyperfine structure and A-doubling resolution, some related important constants of NO have been obtained by analyzing its LMR spectra.

为了对新自由基分子激光磁共振光谱的早期标识提供一些必要的分子参数，我们发展了一组用于分析自由基分子高分辨光谱中的超精细和Λ-双分裂结构的代数方程，通过对NO超高分辨激光磁共振光谱中的超精细和Λ-双分裂结构的分析，获得了该分子的部分超精细结构参数，由此验证了该方法的可靠性，为新自由基分子的光谱标识提供了必要的参数和先导方法。

In an algebra proposed by George Boole about 1850, the variables are permitted to have only two values true or false , usually written as 1 and 0, and the algebraic operations on the variables are limited to those defined as AND, OR, NOT.

George Boole 在1850年提出的代数学中，变量值只有两种：真和假，通常记为1和0，代数运算也仅局限于与、或、非。

Then we use modified nodal analysis to transform the problem into an Ax=b linear algebraic problem where A is a n*n matrix, x and b are n*1 vectors.

然后，利用修饰节点分析方法，我们可以把原始问题转换成一个Ax=b的线性代数问题。在此，A是一个的矩阵，x和b是的向量。

Abstraction degree; abstraction relation degree; semi-kernel; absolute geometry

基础科学，数学，数学概论抽象度；抽象关系度；半核；绝对几何

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。