查询词典 Q

Based on the methods and techniques of covering theory, the structure of module category of tame concealed algebra, one-point extension, vector space category, finite enlargement, degeneration theory, stable equivalence and combinatorial method, we will classify all of the three-point algebras with Gabriel quiver the system quiver Q according to representation type. We get the classification theorem: Let A=kQ/I be a three-point algebra given by the system quiver Q.

本文综合利用覆盖理论，tame concealed代数模范畴的结构，单点扩张，向量空间范畴，有限enlargement，退化理论，稳定等价以及组合的方法等多种方法和技巧，将所有由系统箭图Q给出的三点代数按表示型进行分类，得到如下分类定理：Q是系统箭图，I是kQ的一个admissible理想。

V/Q in one day procedure is feasible and sensitive for the diagnosis of pulmonary embolism. V/Q and spiral CT are complemental.

一日法V/Q对PE有很好的诊断价值，肺通气显像提高了肺灌注显像诊断的特异性。V/Q与螺旋CT对PE的诊断两者为互补关系。

Secondly, a projector operator Q is defined in the Lebesgue integrable functions' space Y such that the composition of the inverse operator of L, I-Q and the nonlinear term f is compact, where I is the identity mapping in Y.

然后，在Lebesgue可积函数全体所成的空间Y上定义了投影算子Q，使得L的逆与I-Q及非线性项f的复合是紧算子，其中，I是Y上的恒同算子。

So G = PQ,Q for which q -order cyclic group, P - G, P and G is the Frobenius for the Frobenius group of nuclear.

则G = PQ，其中Q为q阶循环群， P - G，且G是以P为Frobenius核的Frobenius群。

This result is a higher-dimentional analogue of the Fundamental Theorem of Calculus: it expresses the integral over D of some kind of derivative of P and Q in terms of an integral of P and Q over the boundary of.

格林公式建立了曲线积分和二重积分的关系 O 这是微积分基本定理在高维情形的推广：它将上P、Q某种形式的导数的积分用的边界上 P、 Q 的积分表示出来。

That is, if ''Q'' is special orthogonal then one can always find an orthogonal matrix ''P'', a change of basis, that brings ''Q'' into block diagonal form

就是说，如果''Q''是狭义正交的，则你可以找到改变基的一个正交矩阵''P''，把''Q''带回到分块对角形式

It is found that there exists an obvious prepeak in the low-Q domain (Q=15.7 nm^-^1) of the structure factor. In the X-diffraction pattern, the liquid diffraction curve is corresponding with the solid diffraction curve. There exist the prepeaks for them in the low-Q domain, which shows that there is the comparability in the microstructure between them.

采用紧束缚原子间作用势，利用分子动力学模拟的方法研究了Al5Fe2合金熔体的微观结构，发现在结构因子的小角部分(Q=15.7nm^-^1)出现了一个明显的预峰，并得到X射线衍射实验的进一步印证，在实验测得的合金衍射图样中，液态衍射曲线与固态衍射曲线间存在着很好的对应关系，它们在小角部分都存在峰位，这表明Al5Fe2合金熔体与其固态在结构上存在着很大的相似性。

The maximum principles for functions which are defined on solutions of semilinear elliptic equations u+f=0(q=|u|~2)subject to Dirichlet boundary conditions u=0 were studied by using Hopf s maximum principle,the estimate of gradient q was obtained.

运用Hopf 极值原理讨论了一类具有Dirichlet边界条件u=0的半线性椭圆方程Δu+f=0(q=|u|2)的解的某个函数的极值原理，利用该结论获得了解的梯度q的估计。

It is pointed out in this paper that the p-q、ip-iq and d-q techniques used in active power filter design are the methods based on rotor coordinate and the fan-in vector theory is the method based on stator coordinate.

指出有源电力滤波器的设计中所采用的p-q法、ip-iq法与d-q法，都是基于转子坐标系的方法；而扇合矢量法是基于定子坐标系的方法。

The GRM expansion coefficients with q polarity were formed by the left or right sides of the corresponding triangle cells, and may be also formed by the terms containing q in the subscript of ci in each line.

进一步分析表明极性为q的GRM展开系数即为自上向下由各行脚标中含q的项。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。