查询词典 birational invariant

Substantially invariant sealing pressure between the stationary and rotating seal surfaces is achieved by individual hanging weights each connected by a flexible cable guided by a pulley wheel spindled to rotate in a fixed location, to pull the stationary seal into contact with the rotating seal.

极大地在固定式和转动的封印表面之间的不变式的海豹捕猎压力由各自的垂悬的重量一灵活的缆绳连接的其中每一达到引导由成纺锤形的滑轮轮子在固定位置转动，拉扯固定式封印入与转动的封印的联络。

Finally, group classification of a generalized KP equation is undertaken. Group invariant solutions of the equation are obtained by combining the symmetry reduction method with the variable coefficient generalized Tanh method.

另外，我们还给出了广义Kadomtsev-Petviashvili方程的古典对称群分类，并结合变系数广义Tanh函数方法获得了其群不变解。

Moser [14] obtained the persistence of hyperbolic invariant tori when 0 6 Rn is a fixed Diophantine toral frequency and the eigenvalues of JM (J being the standard symplectic matrix in R2m) are real and distinct.

为中的标准辛矩阵的特征根为不同的实根时，得到了双曲不变环面的保持性。

The new expansions have advantage of being translationally invariant.

我们采用Lorentz规范，对三个常见的多点函数真空平均值作了展开，得到的展开式具有平移不变性，我们利用这些展开式，计算了胶子和夸克在链近似下的完全传播子，而包括非微扰效应的夸克完全传播子在固定点规范下是计算不出来的。

This indicates that the critical pointof the Gaussian model may be uniquely determined by the coordination number,whether on homogeneous fractals or translationally invariant lattices.

通过此结果我们猜测高斯模型在均匀晶格上的临界点可能只与晶格配位数有关

Based on the analysis of bistatic SAR geometry model, bistatic SAR echoed signal is modeled in the double range variables domain in this paper, and the relationship between the double range variable domain and the single range variable domain is established. Then a range-dependent Doppler algorithm for imaging processing airborne bistatic SAR raw data of the translationally invariant configuration is derived, and the effect of error of the algorithm is analyzed by simulating.

摘要该文通过对机载双基地SAR非移变几何模型的分析，建立了双距离变量域的回波信号模型，由于回波数据是在距离和域，该文推导了距离和变量与双距离变量的转换关系，解决了该模型向距离和变量域转换的问题；提出了适用于非移变模式的变多普勒参数的双基地RD算法，并对该算法中引入变多普勒斜率所存在的误差进行了仿真分析。

In this thesis, we study some aspects in analytic combinatorics. The main contents can be summarized as follows. In Chapter 2, by classical umbral method, we obtain some properties and identities of invariant sequences. More generally, we study the self-inverse sequences related to sequences of polynomials of binomial type and the self-inverse sequences related to Sheffer sets, and give some interesting results of these sequences.

本文研究组合分析学中的若干问题，具体内容如下：第二章用经典哑运算方法研究了不变序列的性质及满足的恒等式，随后又推广到更一般的情形，即关于二项式型多项式序列的自反序列和关于Sheffer序列的自反序列。

The invariant V (A , [1〓] that we used for unital case is the semigroup of Murry-von Neumann equivalence classes of projections in matrices over C〓-algebras together with the class of the unit.

我们用来分类的不变量（V，[1〓]）是A的矩阵代数中所有投影的Murry-von Neumann等价类所成的半群及单位元所在的等价类。

Especially we completely characterize when two quasi-invariant subspaces are similar or unitarily equivalent.

在相似和〓等价的意义下给出了有限余维的拟不变子空间的完全分类。

Based on that, two particular indentities of unitarily invariant metrics are obtained.3 Perturbation analysis of the canonical subspaces: This paper gives the least perturbation bound of the unitary factor on the unitary decomposition.

并利用C-S分解，给出了这类新的酉不变度量的上下界。由此，得到两个特殊的酉不变度量的恒等表达式。3 标准子空间的扰动分析：本文给出了矩阵的酉分解中酉因子的最小扰动界。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。