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The paper induces and analyzes research method of the tooth, including Method line of the tooth theory,Envlopment theory, Camus theory, Circling cluster theory and so on.Based on the past theories,the new measure to deduce the chain wheel tooth equation of roller chain at high speed,Circling cluster and envlopment theory,is proposed by analyzing basic concept of equidistant curve and Willis theory.Following the presentation of drawing lessons from traditional roller chainof the change of stanza line distance. A new type of roller chain at high speed is given in the paper.The paper studies deeply structural characteristics, the change of stanza line distance,separation between plank and bore and so on.According to design requst of roller chain at high speed and the study ofH_y--V_0 tooth chain,the impossibility that Quasi-conjugage engagement theory isrealized by the engagement of roller chain at high speed from the aspect of theory is decribed.

作者综述了高速滚子链国内外研究现状，并进行了以下研究工作：归纳分析了齿形法线法理论、包络法理论、卡姆士定理、圆族法理论等齿形研究方法，在此基础上，结合齿形啮合基本定律，分析了等距曲线的基本概念，提出了一种推导高速滚子链链轮齿廓方程的新方法—圆族包络法；在借鉴普通变节距滚子链的基础上，本文提出了一种新型的高速滚子链链条，深入研究了高速滚子链链条结构特性及其变节距、板孔中心分离等特性。

Then growth route of the economy growth rate in equilibrium condition can be gotten by using economic theories.

文章在此假设下，运用经济学原理得出了在均衡状态中经济增长率的增长路径。

This paper analyzes the characteristics and evaluation principles of sci-tech achievement,and then develops an assessment method,the income model,based on equipollence theories to assess the value of sci-tech achievement.

分析了科技成果的特点和评估原则，基于等价理论给出了科技成果的估价模型，并以算例分析了某公司科技成果的估价问题。

By using theories of almost type functions,the theorem about relation of asymptotically periodic functions and asymptotically periodic sequences ,as well as the equipollence of vector-valued asymptotically periodic functions and almost periodic functions on R+ are obtained.

利用概周期型函数的理论，得出了渐近周期函数和渐近周期序列二者的关系定理，以及R+上的向量值渐近周期函数与概周期函数的等价关系。研究了渐近强周期函数空间、渐近周期序列空间的可分性质

On the point of the surplus theories, This thesis elaborated on that the main target of the recall system the government departments adopt is to rectify the manufacturers' internality on the matter of the product quality and to ensure the equitableness on social welfare allotment.

本论文从剩余理论的角度，论述了政府部门实施召回制度的主要目标是纠正制造商在产品质量问题上存在的内部性现象，保证社会福利分配的公平性。

On the side of theories study, maxwell equitation of electrical magnet promulgation is first introduced, then optical characters of thin films have been comprehensive analyzed.

在理论研究方面，首先从电磁场传播的麦克斯韦方程出发，对薄膜的光学特性进行了系统的理论分析。

Translation equivalence, as the core of modern translation theories , plays an important role in the research of literature.

翻译中的等值理论，作为现代翻译理论的核心问题，对研究文学具有举足轻重的影响。

On the basis of the current durability design theories and methods, a new durability design method is proposed for concrete structures. And it is based on equivalent resistance time dependant reliability under atmosphere environment.

在已有混凝土结构耐久性设计理论和方法的研究基础上，提出在大气环境下基于等效抗力时变可靠度的钢筋混凝土结构构件耐久性设计方法。

The most important content theories describing people's needs are Maslow's need hierarchy, ERG theory, and McClelland's needs.

最重要的描叙人的需要的理论是马斯洛的需要层次理论，ERG理论，和麦克兰的需要理论。

Stochastic theory and other correlative theories are used to analyze IGA, and the immune extend population sequence formed by IGA is proved to be an aperiodic irreducible ergodic Markov chain.

同时在纯数学意义上拓展讨论，就IGA的一般收敛理论进行分析，证明了概率弱收敛、几乎处处弱收敛、渐进收敛等性质。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。