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The main purpose of this dissertation is to study the problems of symmetries and conserved quantities of controllable nonholonomic systems and mechanico-electrical dynamical systems, based on the invariance of the Hamilton action under the infinitesimal Lie group transformation.

本文基于Hamilton作用量在无限小Lie群变换下的不变性，研究可控非完整系统与机电动力系统的对称性和守恒量问题。

Rely on the strong technology industrial advantages, the Group in 2004 to invest in the construction of ecological production base in Asia - Inge Medical Ecological Technology Co., Ltd., the country identified as Chinese medicine in medical research will study the production base, Chinese herbal medicines as a natural category of health product development has created favorable conditions.

依赖雄厚的技术产业优势，集团公司于2004年投资兴建亚洲生态生产基地--英格医疗生态科技有限公司，被国家认定为中华医药医学研究会研究生产基地，为天然中药材类健康产品的开发创造了有利条件。

A potential limitation of this study is the use of locoregional treatment as the reference group for inoperable patients.

本研究的限制因素为，作为对照用的局部治疗，只使用在无法开刀的患者身上。

I come here with group of study and inspection.

我到加拿大是跟随团队来的。

The next month I passed a test and was admitted to intern and study at the Logistics Instrument Electric Department, Piloting Flight Station, Hongdu Group.

通过本人刻苦的学习理论知识和努力进行实践工作，很快掌握了本专业的工作要领和基础理论，并且能够独立工作和排除故障，熟练操作各种仪表电器检修设备，并在上岗考核中顺利获得外勤仪表电气工的中级等级证。

In chapter 4, Based on the orthogonality relations and duality of C-algebras, we study the decompositions of C-algebras, and give a Fourier inversion formula on C-algebras, which generalizes the Fourier inversion formula on the center of a finite group algebra over complex. As an application, we characterize the integral closure of C-algebras over the ring of integers, and show a necessary and sufficitient condition for elements of C-algbras being algbraic integral over integers.

第四章 我们应用C-代数的正交性及对偶性刻画了C-代数的一个分解，给出了C-代数上这个完全分解的Fourier反演公式，从而推广了Z分解的Fourier反演公式；作为Fourier反演公式的一个应用，我们刻画了Z在整数环Z上的整闭包，进一步我们研究了C-代数在整数环Z上的整闭包，给出了C-代数在整数环Z上为整元的一个充要条件。

This paper makes use of a Lyapunov function and a nonlinear integral inequality of Gronwall-Bellman-Bihari type to study the asymptotic hehaviors of solutions of a second-order nonlinear functional differential equation. In part I, a group of sufficient conditions is given on continuation of solutions and three groups of sufficient conditions are given on boundedness of solutuicns of equation.

本文利用李雅普诺夫函数及一个Gronwall—Bellman—Bihari型的非线性积分不等式，研究一类二阶非线性泛函微分方程解的渐近性态，在第一部份，给出一组方程的全体解可延展到t=+∞的充分条件及三组方程的全体解有界的充分条件。

The method that combines the effective - field renormalization group with the discretized path - integral representation is extenged to study phase transition of the transverse Ising model in a quantum - spin system on the plane triangular lattice.

将离散路径积分表示下的有效场重整化群技巧推广应用于平面三角晶格上量子自旋横向Ising模型的相变研究，在这个方法中，注意区分了两种具有相同配位数而不同几何构形的晶体，并且考虑了起伏的影响，在二阶累积量近似下，得到了接近于精确解的临界值。

Provide the intercommunicate and function of group study which can help learners to share on Internet.

3提供小组学习的功能，使学习者可以通过网络进行交流和资源共享。

Tounderstand its superconductivity, it is essential to study the bondstructure and electronic states in charged C〓. Based on a tight- binding model and the group analysis, we depict in detail the bondstructure and electronic states of charged C〓, and explain the split ofenergy levels and irreducible representation.

富勒球状碳家族的发现已在化学和物理学中形成了新的研究领域，特别是碱金属掺杂的〓还是Tc较高的超导体，国内外已形成了〓的研究热潮，实验表明，C〓超导体主要来源于电子〓声子相互作用，这要求对C〓的电子态和晶格振动有深入的研究。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。