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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。
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Common Reflection Surface stack is a brand-new and special ZO imaging method, the theory of CRS stack stems from paraxial ray theory, the biggest difference between CRS stack and conventional ZO imaging method is that it consider a reflector R as a circular reflector segment Cr placed in the vinicity of reflector R, Cr can be seen as the second order approximation of the reflector. The CRS traveltime surface is the multi-coverage reflection response of the reflector mirror assigned to R.
共反射面元(CommonReflection Surface=CRS)叠加技术是一种全新的、特殊的零偏移距剖面成像方法,CRS迭加理论源于傍轴射线理论,它与普通的零偏移距剖面成像方法的最大区别是它认为地下反射层是由许多个小反射弧段互相叠合组成的,认为来自某反射点附近的一个邻域内的反射信息都可以对该反射点的成像作出贡献,因此对该反射点进行零偏移距成像时就应该聚焦更多的能量参与迭加。
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The thesis construct on the base of city scale theory of city economics and regulation theory of public management, discussed the existing of city land scale during period of time, summarized the development of
该章以城市经济学的城市规模理论与公共管理学的管制理论为基础,从理论上探讨了一定时期城市用地合理规模的存在性,并系统总结了管制理论的发展,将其移植至城市
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In this book, Lukacs theory of social class consciousness is considered as his most important representative theory, which is also regarded highly by the field of philosophy.
他在书中阐述的阶级意识理论,被认为是其最重要的代表理论,受到哲学界的高度重视。
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Theory of class struggle in Marxist theory all occupies an extremely important position.
阶级斗争理论在马克思主义全部学说中占有极其重要的地位。
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From the first chapter to the forth chapter, it summarizes four France capitalistic ideas on equality: the idealistic equality, the empirical equality, the systematized equality, and the singular equality. Then, it can be explored minutely from representative character, advance presupposition, doctrinal content, objective state, practical counterpoint, institutional embodiment, the tend of practice, theory extending and so on. In the fifth chapter, it researches into their contradiction and contestation between the four equalities, indicates their class-conscious essence, and tries to find out a direction to sole these questions. In the sixth chapter, as the intrinsic tendency of soling these deep-seated contradictions of the four equalities, the paper traces the process of France communism from chimerical idea to scientific theory, so that it can point out a gospel: the scientific socialism is the one and only way to surmount these embarrassments of capitalistic theories on equality. At the last chapter, according to our reviews about theories of equality during the hundred years in France, it can conclude some political apocalypse from our history. Owning the wisdom, we could choose our road to the equality, by using these experiences in the west political histories.
第一章到第四章,总结了带有法国资本主义特征的四种平等思想:法国理想平等观、法国经验平等观、法国体系平等观和法国单元平等观,并在代表人物、前提预设、学说内容、目标状态、现实对应、制度体现及其实践倾向和理论扩展等方面进行细致化地考察;第五章,探析四种平等观之间的内在矛盾和论争,指出其学说的阶级本质,同时试图探寻解决问题的方向;第六章,作为解决以上四种平等观之间深层矛盾的内在趋向,文章考察了法国共产主义平等思想由空想向科学的发展,进而指出只有科学社会主义才能走出资本主义平等理论的泥沼;在文章的最后,本文依据对法国百年平等思想史的考察,总结出历史所带给我们的政治启示,以使我们用西方政治的历史经验来选择我们自己的平等之路!
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New classical economics advanced new theory of comparative advantage, the H-O international trade theory.
新古典学派提出了新的比较优势理论——赫克歇尔一俄林国际贸易理论。
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The competitive power theory is different from classical economics theory, what it studied is the difference between individuals.
而核心竞争力是蕴涵在竞争力体系之中的,它没有固定的模式和表现形式,它只有三个特征:明显的竞争优势、扩展应用的潜力、难以模仿。
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In Buildings and Classical Groups, the author develops the basic theory of buildings and BN-pairs, with a focus on the results needed to apply it to the representation theory of p-adic groups.
在建筑物和典型群,笔者开发的建筑物和英国国民,对基本理论,从而对需要运用到了p进集团的代表性理论成果的重点。
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Many of important concepts in the theory of abstract Lie algebras come from classical theory of groups, for example, complete Lie algebras is a generalization of complete groups.
李代数的抽象理论中很多重要的概念都来源于经典群论,完备李代数便是一个例子。
- 相关中文对照歌词
- A Theory
- Robbin Hood Theory
- Conspiracy Theory
- Built Pyramids
- Domino Theory
- Theory Of Everything
- My Best Theory
- Big Bang Theory
- Hollow Theory
- Banana Clip Theory
- 推荐网络例句
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Diabetes is a social disease that affects several million people worldwide.
糖尿病是一个社会性疾病,全世界有数百万人罹患此病。
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I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.
我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。
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Not only because there was a power off, but also because he cooked a muskrat.
不仅因为停电了,而且因为他做了麝鼠肉。