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AVO analysis is suggested for solving to solve the difficulty in identification of thin alternating layers in exploration of oilfields. It can improve the current method that has no thickness variable in the formula of reflective and is limited by sampling rates in calculation of the coefficient in the time of domain. Using the relationship of stress and displacement on two interfaces, this paper derives the spectrum of reflective coefficient for any incidence angle and thiekness of thim layer based on the equation of seismic wave propagation in the frequency domain.

针对油气田开发中薄互层认识难的问题，提出从AVO分析解决困难，克服现有方法在反射系数公式中无厚度变量、时间域计算反射系数谱受采样率限制的不足，运用两个界面间位移与应力关系，从频率域地震波传播方程推导了任意入射角和薄层厚度下的反射系数谱。

Ccording to the philosophical standpoint of the system theory,this thesis discusses the question of the cognation and method theory of the slab structure doctrine which is the leading theory of the modern geological science,and analysises the existent four essential theroetical diffiCulty.

本文根据系统论哲学观，讨论了当代地质科学主导理论板块说的认识论与方法论问题，分析了所存在的四个根本性理论困难，并基此而提出地学发展的理论新命题──地壳及岩石圈板块运动属性的三维与两维之辨。

Many are not color blindness person in distinguishes and in the discrimination purple and other colors also has certain difficulty.

很多人不色盲的人的区别，以及在歧视紫色和其他颜色也有一定的困难。

When Paul wrote to the Colossian believers, they were facing some conflicts. They had difficulty connecting their lives in Christ with their lives in Colossae .

当年保罗在写信给歌罗西的信徒时，信徒们的生活正面临一些冲突，因为他们没有办法把在基督里的新生活和在歌罗西的现实生活连结在一起。

Another difficulty on the road to King's colour-blind America concerns higher education.

高等教育是金的无种族歧视的梦想的道路上另一个困难。

This method overcome the problems of many supposition conditions in theory and difficulty in searching critical slip surface in 3D limiting equilibrium analysis; It uses the 3D FEM\'s stress field directly, differs from the practical value of 3D FEM strength reduction method used hypothesized load, and differs from the characteristic of the FEM with limiting equilibrium theory still to need to divide the columniation, and suppose the critical slip surface in advance.

该方法克服了三维极限平衡分析方法在理论上引入较多假设条件，且搜索临界滑裂面困难的问题；它直接采用三维有限元应力场，不同于三维有限元强度折减法基于虚拟荷载上得出的实用价值；同时异于沿用极限平衡理论的有限元法仍需要进行条柱划分，并事先假设滑裂面形状及位置的缺点。

Socialism is basic the combinative problem of system and market economy, it is a key of course of Deng Xiaoping academic generality and difficulty.

社会主义基本制度与市场经济的结合问题，是邓小平理论概论课程的一个重点和难点。

Packing problem is a typical combinatorial optimization problem, and has NPC difficulty in solving complexity.

布局问题是一种经典的组合优化问题，在求解复杂性上具有NP完全性。

And as enterprise aquistion and merger business emerging constantly in the whole world, the difficulty of preparing the combined accounting statement is increasing constantly .That how to norm the preparing of the combined financial statement just become an important subject that the circle of accounting theory and practice circle probe into together.

而且随着世界范围内企业购并业务的不断涌现，合并报表的编制难度在不断增加，如何规范合并会计报表的编制，也就成为会计理论界与实务界共同探讨的一个重要课题。

This gives the exploitation of combustible ice is a big difficulty.

这给可燃冰的开采带来了很大的困难。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。