查询词典 birational invariant

In this paper, we mainly concern the persistence of lower-dimensional invariant tori in generalized Hamiltonian systems.

本文主要研究广义Hamilton 系统的低维不变环面的保持性。

Such an expression describes an invariant under a Hermitian transformation.

这样的措辞描述了不变下，厄米特变换。

If the dynamicmapping thus determined is continuous,the two topological spaces is said to be homeomorphic and their respective energy shellsdo have the same dynamic property of being subdividable into invariant subspaces according to the same set of quantum num-bers.

如果这样决定的动力学映射是连续的，它就是两个拓扑空间之间的同胚映射，而两个系统的能量壳有同样的动力学性质，即可以按同一套量子数划分不变子空间。

In the first part, the concepts of the completely normal spaces and strong completely normal spaces in L-topological spaces are defined, which are the generalization of the completely normal spaces in general topological spaces. They are some good properties such as hereditary, weakly homeomorphism invariant properties, good L-extension, but they arent producible in general.

第一部分的主要内容如下：第一部分这一部分是将一般拓扑学的完全正规分离性的概念推广到了L-拓扑空间，给出了L-拓扑空间的完全正规分离性和强完全正规分离性的定义并讨论了它们的若干性质，比如，它们都是可遗传的，弱同胚不变的，"Lowen意义下好的推广"等。

By Llibre's algebraic invariant theory, at first on the basis of classification for quadric and quadric homogeneous binary polynomial, the plane linear and cubic homogeneous polynomial differential systems are classified.

利用Llibre的代数不变式理论，首先由二元二次和二元四次多项式的分类结果，对一次和三次齐次多项式微分系统进行代数分类，同时补充了已有结果中出现的漏洞；其次，由称共变张量空间的性质，对缺二次项的三次微分系统在保证轨线走向不变的前提下进行代数分类，使分类后同类系统的示性多项式有相同零点；最后通过讨论一类简单系统的有界性说明了分类的方便方处。

Some sufficient condition to guarantee the existence of global invariant manifold s consisting zero homotopic closed orbits is gived.

当在每个不变柱面上有奇点时证明了这类系统局部极限环的存在性；同时给出了这类系统存在由第一类闭轨组成的全局不变流形的条

In this study, we adopt a Scale-Invariant Gauss-Markov hyetograph that show the maximum likelihood estimator of the dimensionless hyeto graph. There are five significant principal components were extracted which explained total variance about 90%.

研究中采用具尺度不变性高斯马可夫雨型（Scale-Invariant Gauss-Markov，简称SIGM），并将此资料进行多变量统计分析，以主成份分析法萃取出设计雨型之五个主要成份，此五个主成份具有解释设计雨型总变异数之程度约为90%。

By introducing non-relativistic, adiabatic and quantum approximation to NLCMEs in the FBG with hyperbolic tangent apodization, and assuming the soliton as a particle with low velocity and invariant energy, the track equation of soliton is obtained.

利用双曲正切中间变迹光栅中的NLCME，引入非相对论-绝热-准量子近似法，将光栅孤子作为一个低速运动且能量守恒的整体进行分析，得到了孤子的轨迹方程。

In this paper,the direct and inverse scattermg problems for the viscoelasticmedium are studied via the Invariant Imbedding technique.

本文利用lnvariant Imbedding方法在时间域内讨论了粘弹性介质中波的散射与逆散射问题，主要工作如下

Then, we applies it to analyze the structural property of P/T-system chapter 4 improve the Algorithm of invariant and enables us to get two invariants in the same time ,Also in this Part ,a modified incidence matrix is introduced and applied to analyzing the structural property of some subclasses.

第三章对求解不变量做了改进，使得可以同时得到S-不变量及T-不变量。另外介绍了文献中一种"修正"的关联矩阵，并用其讨论了一些P/T-系统子类的结构特性。

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。