In this paper we give a way by which find general term formula of second order linear recurrence sequence by means of matrix theory.
文章借助矩阵理论解决了一般二阶线性递推数列通项公式的求法问题。
The cross sections for such processes are calculated in second order perturbation theory and expressed in term of the intensity of laser radiation and the nuclearmatrix elements.
用二阶微拢论计算这一截面，结果表示为核矩阵元和激光电场强度的函数。
It is because that the coupling term due to polarization and the ignored term due to the weakly guiding approximation are as small as the second order, and they are just the same.
最后认为这是由于偏振耦合项是二阶小量，而弱导近似忽略了与之相等的二阶小量耦合项。
Modifying the salinity difference format and salinity equations of the original model, the present model USES the second-order accurate difference format and introduces the term of physical diffusion.
改进了原模式的盐度差分格式和方程，采用二阶精度差分格式并引入了物理扩散项。
The second, Louisa, was taller and more elegant in figure; with a very pretty face, of that order the French term mino is chiffone: both sisters were fair as lilies.
二女儿路易莎的个子要高些，身材也更加优美，脸长得很不错，属于法国人所说的“minoischiffonne”那一类，姐妹俩都像百合花那么白净。
The purpose of this paper is to study the existence of periodic solutions of a class of second order Hamiltonian Systems ith damping term.
主要研究了一类带有阻尼项的二阶哈密顿系统的周期解的存在性。
We propose a new method of finding the nonlinear correction term as well as the second order nonlinear susceptibility of the materials by using a modified MZI system.
我们改进了MZI系统，并用其获得了各向同性非线性材料的非线性修正项和二阶非线性磁化率。
An existence theorem of positive solution is established for a superlinear second-order three-point boundary value problem. Here, the nonlinear term is bounded below and need not be nonnegative.
建立了超线性二阶三个边值问题的一个正解存在定理。这里，非线性项是下有界的并且不需要是非负的。
The discretized schemes of the convective fluxes, diffusive fluxes and unsteady term are all of second -order accuracy. The SIMPLE algorithm is adopted to deal with the pressure-velocity coupling.
对流项、扩散项和非恒定项的离散格式均具有二阶精度，利用SIMPLE算法处理压力-速度耦合。
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the grid spacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the grid spacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
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