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1·Using the perturbative method the asymptotic solution of the corresponding model is obtained.

利用摄动方法求出了相应模式的渐近解。

2·The perturbative methods for positron-atom scattering omitted Ps formation and ionization channels.

微扰的方法在正电子与原子的三射中忽略了电子偶素形成和电离通道；

3·Chapter 1 begin with an introduction and overview of the computations of perturbative scattering amplitudes.

第一章是关于微扰散射振幅计算的导论和概述。

4·Studying QCD vacuum properties and non-perturbative QCD is a very important issue for strongly interacting processes.

研究QCD真空性质和非微扰QCD对于强相互作用过程来说是一个非常重要的问题。

5·Then the perturbative description of the interaction between a single electron and the laser field can be replaced by the tunneling ionization.

此时单个电子与场相互作用的微扰描述可以用隧穿描述取代。

6·Geometry and quantum field theory, designed for mathematicians, is a rigorous introduction to perturbative quantum field theory, using the language of functional integrals.

几何和量子场论课程是用泛函积分的语言对微扰量子场论的严谨的介绍，主要针对数学家设计。

7·Micro satellite is under the influence of perturbative forces which would affect its orbit, so it is important to consider these perturbations in micro satellite orbit design and control.

小卫星在实际运行中受到多种摄动力的作用，这会对其轨道造成不同程度的影响，因此在小卫星的轨道设计与控制中，摄动是必须考虑的重要因素。