着重说明

The paper reviews the phylogeny of the LCD, describes the recent development situation of LCD-TV and several authority investigation institution do its prospective forcast. The research of the switching power supply, future development t rend is given in the paper. Outlines of LCD-TV technology, introduce the sort of topological structure. The BUCK type converter topological structure and the systematical basictheory were put emphasis on; the PFC, the reasons of power factor simply and the core of L6562 were analyzed, emphatically on the application circuit of this core, and account the design parameter of the application circuit. The sort and control mode of PWM, the control core of UC3846 and OB2262 were explained, the application circuit of this core were specific analyzed, practice picture in the real circuit uses oscilloscope were educed and contrastive analysis in this research.

本文回顾了LCD的发展史，介绍了LCD-TV发展的近况和一些权威调查机构对其未来的预测；对开关电源的研究概况和它的发展趋势作了总结；总体介绍了LCD-TV电源的结构及工作原理、拓扑结构的分类，着重研究了BUCK型变换器的拓扑结构及工作原理；对PFC作了综述，研究了功率因数降低的原因，重点介绍了L6562芯片，对此芯片的应用电路作了具体分析，并对芯片外围的设计参数作了分析研究；研究了PWM的分类和控制模式，对控制芯片UC3846和OB2262分别进行了重点说明，详细研究了基于UC3846的PWM设计，用示波器对其实际电路进行了抓图，并对比分析实际波形。

The theory and construction of two dimensional holospectrum and three dimensional holospectrum are described especially.

着重对二维全息谱、三维全息谱的原理及构建方法进行了说明。

China"s Internet media focus on analysis of public opinion and the status of the existing network of non-rational public opinion, the radical tendency, the media violence and the media to "westernize the impact of the problem, and cited the past two years have targeted the network of representative opinion incident to illustrate .

着重论述了我国网络媒体公共舆论的现状以及存在的网络舆论非理性、偏激化倾向，舆论暴力以及舆论的"西化"影响等问题，并有针对性列举这两年具有代表性的网络舆论事件加以说明。

So VEGF is an important reason during anamorphism of hepatocirrhosis.

这说明，在肝硬化渐变中，VEGF起着重要作用。

In contrast, the levels of glutamate and alanine decreased, the level of ghitamine increased in the ipsi-lesional MVN, and the level of glutamate decreased in the contra-lesional MVN of rats 2 weeks after infusing 10 mg arsanilic acid into the tympanic cavity to obstruct m-periphery vestibular organ.

结果提示，单侧迷路破坏后双侧MVN区氨基酸含量立即失去平衡，随着前庭代偿的进展，此差异减少，但是在前庭代偿后却出现双侧前庭核区谷氨酰氨的含量失衡，说明在前庭代偿过程中氨基酸含量变化起着重要作用。

The present paper summarises different atmospheres used for sintering of PM steels. Using some examples, the effect and influence of different sintering atmo...

本文综述了PM钢烧结过程中所用的不同的烧结气氛，阐述不同气氛的作用及其影响，着重分析不同气氛中碳势及氧浓度的控制，并举例说明

In the fifth chapte,the author emphatical explores the way in which to carry on the moral education in physics teaching,and cites examples to explain the concrete method.Carrying on the moral education in physics teaching includs the following aspects.

第五章笔者着重探索了在物理教学中实施道德教育的途径，并举了一些案例来说明道德教育在物理教学中的具体实施方法。

The hereditability of chest diameter is the largest both in half-sib families and clones.N, P and K are three necessary nutritive elements of all plants, which are very important to the growth of plants.

在两片测试林中都以胸径的遗传力为最高，说明胸径在白榆中是遗传性最强的一个性状。N、P、K是一切植物生长所必需的大量营养元素，对植物的生长起着重要的作用。

This article consists of a three-chapter text, a brief instruction and an epilogue: achievements of the research on bel canto and thefolk singing as well as their relation in China were concluded briefly in the introduction. In chapter 1, the origin and characteristicsof bel canto and the folk singing, together with their fusion processin present China was illustratively revealed though historical review. In chapter 2, bel canto and the folk singing are analyzed in technical aspects like breath, vocalization, pronunciation, and resonancetogether with comparison on their similarities and differences.; Chapter three is concerned with the application of bel canto in folk singing and nationalization of bel canto as well as the feasibility oftheir fusion from technical aspect. Moreover, it is illustrated thatthe fusion of these two vocal arts in china not only conform to social development and mass aesthetic requirement, but also has great influence on the education and development of Chinese vocal arts. Epilogue is to express wishes to future Chinese vocal arts based on the trend of multi-culture fusion and innovation.

本文共由三章正文和简短的绪论及结语构成：绪论粗略总结国内关于美声唱法、民族唱法及二者关系的研究已有的成果；第一章尝试通过历史回顾直观展现美声唱法、民族唱法之由来、特性及二者在当代中国对话融合之进程；第二章侧重从呼吸、发声、吐字、共鸣等技巧层面分析美声唱法、民族唱法各自的技巧特点并比较二者之间的异同；第三章除着重探讨美声唱法的民族化、民族唱法的美声化及两者融合共促于技术层面之可行性外，更试图说明此二种声乐艺术的融合发展在中国当前不仅是符合社会发展趋势和大众审美要求，更将对中国声乐艺术的教育和发展具有重要影响；结语则就多元文化融合创新之大趋势表达对未来中国声乐艺术的希望。

Proline was much more accumulated in the fleshy leaves of K.foliatum with increased salt concentration concided with the expression pattern of K.foliatum P5CS, suggesting that proline and betain as two effective osmolytes had important functions for Kalidium foliatum during stress.

检测的各基因均受盐的诱导。P5CS和KfBADH基因的表达随着盐浓度的升高而表达逐渐增强，而脯氨酸的含量也随着盐胁迫程度的增强而在盐爪爪肉质化叶内积累更多，说明脯氨酸和甜菜碱作为重要的渗调物质，在植物逆境胁迫中可能发挥着重要的作用。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。