近似方法

In the limit of low temperature, the time evolution of observables is analytically studied by utilizing the flow equation method.

在低温近似下，本文利用重整化群流方程方法讨论了该体系可观测量随时间的演化趋势。

Response surface methodology was introduced into the cross sectional optimization of truss, in which the stress and displacement constraints were expressed as linear functions dependent on the reciprocals of cross sections.

把响应面方法引入桁架截面优化中，将应力和位移约束近似表达为桁架截面倒变量的线性函数。

The correct coefficient of temperature difference can be taken as one, when this method is used to calculate the heat transfer coefficients of shield section.

结果表明，CRK法的计算误差小于传统计算方法，在进行遮蔽段传热计算时，错流温差校正系数可近似按l处理。

In this paper, we also study the problem of approximate XML query matching, based on tree pattern relaxations ,and introduce ranking schemes embedded in efficient algorithms to process potential answers.

进而，本文研究了建立在查询模式树松弛方法基础上的XML近似查询匹配，并介绍内嵌了分级方案的高效算法来处理潜在的查询结果。

The results show that for SiO〓 and GeO〓 glasses, the Rayleigh scatterings arise mainly from the disorders of the densities of atoms, consistent with the assumption of the fictive temperature approximation which is the usual method used in the existing optical fiber theory to calculate Rayleigh scatterings in glasses.

计算结果表明：对SiO〓和GeO〓玻璃，现有光纤理论的瑞利散射处理方法——虚温度近似所作关于玻璃中瑞利散射主要来自玻璃的原子密度无序的假设能很好成立。

The nonlinear laser beam propagation in high power laser driver and the influence of the smallscale selffocusing and phase noise on beam quality in disk amplifier have been analyzed by a linear model.

建立了一套线性的近似分析方法，研究高功率激光驱动器中强激光传输的小尺度自聚焦效应和相位噪声对光束传输和光束质量的影响，给出了系统噪声强度、B积分值与光束近场调制对比度之间的定量关系。

The principle,arithmetic and procedure of approximate calculating the hazard radius with TNT equivalent weight method were introduced.

文中介绍了用 TNT当量法近似计算锅炉爆炸事故危害半径的原理、计算方法和程序，最后进行了实例计算。

The scattering characters of some twodimensional and three-dimensional complex objects have been calculated with the numerical method.

在克希荷夫近似条件下，将图形计算方法引入复杂声学目标的背向散射计算。

Pouch helps advance somebody's career beautifully the method is the same as African violet approximate, also need to provide loose establish makings and rare top application.

荷包花的栽培方法同非洲紫罗兰近似，也需要配备疏松的植料和稀薄的追肥。

Several active methods for generating approximate non-diffracting Bessel beams are introduced by using resonator theory to analyze and simulate.

介绍几种主动式产生近似无衍射光的方法，并用谐振腔理论进行分析和模拟。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。