查询词典 algebraic expression

Full vibrational energy spectra {E} and molecular dissociation energies D are studied using conventional least-squares fitting and an algebraic method proposed for some diatomic electronic states of NaK molecules.

应用传统的最小二乘法和作者基于微扰理论建立的代数方法，本文研究并比较了双原子分于NaK的部分电子态的振动能谱和离解能。

We analyze formers centers conditions for polynomial Lienard equations, give direct conditions of a nondegenerate center at the origin with elimination theory, and give an algorithm for general situations with algebraic elimination methods of polynomials.

运用多项式的代数消元法，对前人给出的多项式Liénard方程的中心判据进行分析，对多项式的系数给出原点是非退化中心的直接条件，并对较一般的情形给出算法。

Next,we obtain several discrete criteria and algebraic limit theorems forMartin nonelementary subgroups of I som.

首先，我们证明了Martin非初等群真包含Bowditch非初等群，但是，对离散群，它们是等价的。

According to the characteristics of CC NUMA parallel architecture, the authors propose some strategies and methods to optimize the communication of parallel programs by combining computing transformation and data transformation based on unified algebraic representation in this paper.

因此 ，如何通过并行编译优化提高并行程序在 CC- NUMA并行系统中的执行效率，有着重要的理论和实际意义。

With the frequency and mode shape being regarded as functions of damage parameters, the overdetermined algebraic equations with damage parameters as unknowns can then be constructed by differentiating frequency and mode function on the basis of structure mode finite element formula, the damage parameters of which are obtained via Taylor expansion.

本方法从结构模态有限元算式出发，把频率和振型看作损伤参数的函数，经过泰勒展开获得频率、振型对损伤参数的一阶偏导数，然后构造以损伤参数为未知量的超定线代方程组，求解得到全部损伤参数值。

In this thesis, we mainlystudy some problems on approximate implicitization and piecewise algebraic varieties.

本文主要针对参数曲线曲面的近似隐式化和分片代数簇的某些问题展开研究。

The governing equation of tank wall can be expressed as a set of algebraic equations by the pseudospectral method.

采用重心Lagrange插值多项式建立未知函数的微分矩阵，将池壁的控制方程表示为代数方程组。

The thesis suggests an algebraic grid generation method for calculating the transient flow problem of a small rigid circular cylinder oscillating rectilinearly inside a large circular fluid tank.

中文摘要本文旨在建议一个代数格网生成方法，以计算圆柱体於大型圆形液槽内水平振动之流场。

We obtain a sequence of solutions of Liapunov algebraic equations which converges to the solution of a SARE.

算法中得到Liapunov线性代数方程解的序列，该序列收敛于随机Riccati代数方程的解。

The theoretical knowledge and experimental research shows that this method can increase the reconstruction speed.Based on SART, a modified simultaneous algebraic reconstruction method is also presented, which takes into account both the density of pixel an

对代数重建法和联合代数重建法的思想根源以及由此而导致的性能上的差异进行了研究分析，提出了基于代数重建法的改进算法，该算法将相邻的像素综

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。