微扰理论

Based on concept of U(1)-invariant adiabatic expansion we propose an invariant perturbation theory of quantum adiabatic process, furthermore, we obtain a new adiabatic condition.

我们提出了绝热轨道、绝热演化轨道及U(1)不变的绝热轨道和绝热演化轨道等概念，重申了绝热演化的含义。并在U(1)变换不变展开的基础上给出了绝热近似不变微扰理论新的绝热条件，并进一步得到了新的绝热条件。

Two useful formulae for calculating the attenuation constant of conductor loss for TEm0 and TE0n modes of the rectangular waveguide are derived, and the loss characteristic in the rectangular waveguide is analyzed and computed.

根据横向谐振原理和微扰理论，本文提出了一种分析非理想波导损耗特性的新方法，推导出了一组计算矩形波导TEmO和TEOn模导体损耗的衰减常数公式，并分析计算了矩形波导的损耗特性。

In the second part, the yan jingxiang shuangtongliang model for radiation and the linear time perturbation theory are used in this paper, and the helical magnetic instability is analysed in an axial magnetic field.

第二部分：采用沿径向双通量辐射模型和与时间有关的线性微扰理论，讨论了在轴向磁场中影响电弧螺旋不稳定性的一些因素。

The soliton solution to most completely integrable (1+1) nonlinear partial differential equations, especially to which has important physical applications, were found by inverse scattering transform (1ST) method.

本论文从严格孤子解、孤子微扰理论和数值模拟三方面研究一些孤子传输系统。

The algebraic method is used for the first time to study the vibrational spectroscopic constants and the vibrational spectra of three electronic states of alkali heteronuclear diatomic molecule: NaLi -、、 state. The dissociation energies of these states are studied using the algebraic energy method.

文章使用作者建立的基于微扰理论的代数方法，首次研究了碱金属异核双原子分子NaLi的、、三个电子态的振动光谱常数和振动能谱；使用基于AM的代数能量方法研究了这些电子态的离解能。

Perturbation theory in physics and engineering technology have been widely used, known as perturbation theory.

摄动理论在物理学和工程技术上也被广泛采用，称为微扰理论。

In this thesis, computer molecular simulation, perturbation theory and renormalization group theory are adopted to study the thermodynamic properties for this system.

本文对该体系的性质分别进行了分子模拟、微扰理论及重整化群理论的研究。

More accurate results were obtained by using the new approach to calculate resonance structure and photoionization cross section.

本文使用多体微扰理论对锰原子及其离子光电离过程中光电离截面和共振结构进行了全面的理论研究和计算。

In the equation of state the induced dipole and quadrupole interactions between the particles are neglected.

摘 要 基于微扰理论并借助于统计缔合流体理论的基本思路，建立了氨基酸和糖水溶液密度的状态方程。

Based on the mean spherical approximation integral equation theory, perturbation theory and group contribution concept, a new molecular thermodynamic model was established for the representation of activity coefficient of solvent in the IL-containing systems.

利用平均球近似积分方程理论、微扰理论以及基团贡献的基本思想，本文建立了一个适用于含离子液体体系中溶剂活度系数计算的新的分子热力学模型。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。