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The Mg-O bonds, the Raman frequencies and the number of the v〓-SO〓 band of the ion pair chain〓(n=1-4) increase with the growing of the chain, and it is well consistent with the experiments. It explains that the phenomena of gel appearance in the supersaturate solution of MgSO〓 and the blue shift of Raman spectra, as well as the phenomena of FWHH getting wider.

在〓（n=1-4）离子对链中电荷交替分布，Mg-O键长随链增长而增长，拉曼光谱频率随链增长而增高，最大强度振动波段的数目随链增长而增大，这些计算结果解释了MgSO〓过饱和溶液中出现的凝胶现象和其拉曼光谱的波段蓝移和半峰宽变宽的变化。

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

Based on the percolation conductive phenomena of conductive composites andPTC/NTC (Positive Temperature Coefficient /Negative Temperature Coefficient)effects of resistance, a series of new experimental phenomena and concepts of carbonfiber cement-based composites such as PPC and NPC effects, Kaiser memory effect of resistance to residualdeformation and resistance creep are found and proposed.

借鉴已有的导电复合材料渗流导电现象和电阻的正温度系数／负温度系数效应基本理论，发现和提出碳纤维水泥基复合材料电阻的正压力系数与负压力系数、电阻对材料剩余形变的Kaiser记忆效应以及电阻徐变等新的现象和新的概念。

Acoustic Emission is a class of universal phenomena whereby transient elastic wave are generated by the rapid release of energy from localized sources within a material. In various field, people begin to use this phenomena to test these structures damage and evaluate their security.

声发射是材料中局部源快速释放能量而产生瞬态弹性波的一种普遍物理现象，人们已经开始在各个领域中利用这种现象进行研究对象的缺陷检测和安全性评价。

The backblow phenomena occurring in column type structures such as chimney,warer tower,etc,while toppling down by blasting results from two major factors一blast slot length and its shape,Themethod and calculation formula are proposed for effective preventon of the backblow phenomena through con-trolled blasting practice.

引起烟囱水塔等细高型建筑物爆破倾倒时的后座现象有两大因素，即爆破切口长度和切口形状。

To prove convectively that there is relationship between avian aesthetic mentality and birds' food need, the paper provides a number of pictures of birds with beautiful feathers. To show the powerful ability of the need aesthetics in explaining aesthetic phenomena, the paper discusses natural beauty and phenomena of literature and arts, especially the phenomenon of imbalance between development of arts and literature and that of economics.

为了令人信服地证明鸟类的美感心理和其食物需求相关，文中提供了不少带有艳丽羽毛的鸟雀的图片；为了说明需求美学对审美现象有更强的解释力，文中讨论了自然美和文学艺术现象，特别是艺术发展和经济发展不平衡现象。

Based on the development of entrepreneurship and small and medium-sized firms, this paper starts with the characters of speed-growing firms and analyses some complex phenomena in them, then puts forwards that the dissymmetry is the basic reason of complexity. By discussing three dissymmetric phenomena in firm growth, this paper probes some academic issues including the syncretizing of entrepreneurial management and traditional management.

本文基于鼓励创业和大力发展中小企业的时代背景，从中小企业群体中的快速成长企业特征入手，考察分析了国内外企业快速成长中的复杂现象，揭示出非对称性问题是企业成长复杂性产生的根源，并在剖析企业成长的&质&和&量&、企业成长和管理能力增强以及专业管理和创业管理之间的非对称现象基础上，对其所引申的创业管理与传统管理的融合等学术问题进行了探讨。

Interface: double layer, electrocapillary phenomena, differential capacitance, and zero charge potential and adsorption phenomena.

课程目标：通过本课程的学习，使学生能够熟悉和掌握电化学的基本概念、基本规律、基本理论，为将来学习电化学专业课程以及从事电化学的研究和应用打下基础。

Fractal theory is a new theoretical non-linear tool to study complicate phenomena in nature, and has a powerful function in describing and evaluating the phenomena with continuous in scale, stochastic in distribute or erose in shape.

分形理论作为研究自然界复杂现象的非线性理论新工具，在描述评价具有层次连续性、随机性或不规则性等特征的对象方面，具有很强的功能。

Illuminated by them, the thesis proposes a standard used to appraise the progress of scientific theories. The standard comprises of two aspects: in one hand, the progressive theory should be falsifiable, parsimonious and logically consistent;in the other hand, in comparison with previous theories, the progressive theory can interpret more phenomena or predict "new facts", though it can't interpret some special phenomena ("anomalies" in the term of philosophy of science).

本文受上述三种评价体系的启发，提出一套评价科学理论进步的标准，即进步的科学理论必须符合两大标准：一是该理论必须具有&可证伪性&、&简约性''和&逻辑一致性；二是同以往的理论相比，该理论解释经验事实的能力更强，尽管它对某些现象无法作出解释。

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％。