理论

This article first antenna, microstrip theory, the circular polarization technology, the theoretical discussion, in this based on the microstrip antenna of circular polarization method - corner square microstrip antenna, and has done a design simulation , and then do the design and further research to improve and eventually get a resonant frequency (S11 reflection coefficient corresponding to the minimum frequency) for the 1.5GHz and 1.43GHz, the frequency of circular polarization for the 1.46GHz, S11 is less than -10dB relative bandwidth, the VSWR is less than 2 is about 8.8% relative bandwidth, axial ratio less than 3dB relative bandwidth of about 2.2% of the right circular polarization microstrip antenna design case, which proved very good the circular polarization microstrip antenna theory, also fully confirmed by a square corner design is a practical program, and select the appropriate regulation of sticks is indeed able to improve the performance of the antenna.

本文先对天线、微带理论、圆极化技术等进行了理论论述，在此基础上，提出圆极化微带天线的实现方法——切角方形微带天线，并对此做了设计仿真，后又对这一设计方案做了改进及进一步研究，最终得到一个谐振频率（反射系数S11 的最小值所对应的频率）为1.5GHz和1.43GHz，圆极化频率为1.46GHz，S11 小于-10dB 的相对带宽、驻波比小于2 的相对带宽约为8.8%，轴比小于3dB 的相对带宽约为2.2%的右旋圆极化微带天线的设计案例，从而很好的印证了圆极化微带天线理论，也充分证实了切角方形是一种切实可行的设计方案，而选取合适的调节枝则确能提高天线的性能。

The application of rough set theory in incomplete information systems is one of the key problems to study rough set theory in practice. However, it is difficult for classical rough set theory to deal with those incomplete information systems.

粗糙集理论在不完备信息系统中的应用，是将粗糙集理论进一步推向实用的关键之一，而经典的粗糙集理论对不完备信息系统的处理显得束手无策。

Main topics of this dissertation are as follows:(1) In this paper, we re-interpreted the basic concept of classical rough set theory based on VPRS, we also analyse the features and process of the application of rough set theory in data mining and pointed out the direction of the research.

本文的主要工作包括：(1)在可变精度粗糙集理论下对经典粗糙集的概念进行了重新的诠释；分析了粗糙集理论在数据挖掘应用中的理论根据和基本原理，并点出了研究的方向。

This book analyzes, from a single perspective, some of the most important applications: the critical-point theory in classical statistical mechanics, the scalar quantum field theories in two and three space-time dimensions, and Tomonaga's theory of the ground state of one-dimensional Fermi systems.

这本书分析，从一个单个的视角，一些最重要的应用：在经典统计力学方面的临界点理论，标量量领域理论在2 和3 空间时间维，和Tomonaga 一维费密系统的基态的理论方面。

In theory, kinetic theory of gases with classical mechanics and statistical methods based on the thermal motion and interaction to make the appropriate simplifying assumptions, gives molecular modeling and collision mechanisms, using probability theory dealing with a large number of elements of collective behavior, characterized by the collective movement find the statistical average value.

理论上，气体动理论以经典力学和统计方法为基础，对热运动及相互作用做适当的简化假设，给出分子模型和碰撞机制，借助概率理论处理大量分子的集体行为，求出表征集体运动的统计平均值。

From the point of view of law, rural collective ownership is different from the traditional civil law theory. That how to analyze rural collective ownership by the traditional civil law theory, mold it to become a system rights of clear nature and sound contents is a topic of great theoretical and practical significance.

从法学的角度看，农村集体所有权与传统的民法理论有很大的出入，如何以民法理论来分析农村集体所有权，将其塑造成为一种性质明确、内容完善的权利体系，是一个非常具有理论和实践意义的课题。

Besides new theories and experimental tools, the most special achievement in our research is the patch coater.

除了学理的探讨，本研究结合涂布理论、机械设计与机电整合的知识，自行设计与组装一台精密方块形涂布机并测试成功，本研究除了理论的探讨与建立新的实验工具之外，最特出的就是第一个成功的将涂布理论应用於涂布机设计，提升我国先进涂布技术水准於世界顶尖的地位。

Its main task is to make students understand clearly and wholly the basic theory, analysis result and the latest development of information theorem and coding by teaching and exercises, which can build a substantial theory basis for studying the subsequent courses on the transmission, storage and processing of information, image and speech source compression and coding, and error-correcting coding for computer communication and wireless mobile communication, as well as the research and development of modern code theory.

它的主要任务是通过教学和习题，使学生对信息与编码的基本理论，主要分析结果以及最新的发展有一个清晰和完整的认识和理解。为学习和研究信息的传输，存储和处理相关类的后续课程，以及图像与语音信源压缩编码、计算机网络通信与无线移动通信纠错编码、以及各种现代密码理论与技术的研究和开发，打下坚实的理论基础。

Topics include: mathematical definition and properties of information; source coding theorem, lossless compression of data, optimal lossless coding; noisy communication channels, channel coding theorem, the source-channel separation theorem, multiple access channels, broadcast channels, Gaussian noise, and time-varying channels.

课程主题包括：针对「资讯」的明确数学定义及性质描述；信源编码理论、无失真资料压缩技术、最佳化无错误编码；杂讯干扰的通讯频道解析、频道编码理论、资讯来源-通道编码分离理论、多重存取频道解析，广播型态频道解析、高斯杂讯及多变量时间频道解析。

The classical Hertz and JKR elastic contact theory is successfully applied to the plastic collision of cohesive particles. And the coefficient of restitution is then defined from the consideration of energy.

在经典Hertz弹性接触理论和JKR粘弹性接触理论的基础上，本文从理论上将其推广应用至粘附性颗粒塑性碰撞的情形，并从能量的角度定义了能够更加合理反映碰撞规律的弹性回复系数。

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％。