专题的

This topic returns in view of the cut type switch spreads the type switch "to return for the predecessor design spreads the type electric power switch utilization in the LED lamps and lanterns" is the research direction, to achieve take reduces the power loss to replace the tradition operational amplifier pulse wave width accent as the goal using IC UC3842 changes part, the actuation returns spreads the type electric power switch's switch of Power MOSFET, so as to controls instead spreads the type electric power switch breakover closure's time then control voltage output size, achieves the output voltage to the load LED lamps and lanterns adjusts the LED lamps and lanterns brightness the goal.

各位大大抱歉~！因为英文底子不好！希望大家帮忙翻译一下，希望不要用翻译软体翻的最好是自己翻！拜托了！本专题针对切换式转换器的返驰式转换器为前身设计「返驰式电力转换器运用在LED灯具」为研究方向，为达到以减少功率损失为目的利用IC UC3842代替传统运算放大器脉波宽度调变部分，驱动返驰式电力转换器的Power MOSFET之开关，藉以控制反驰式电力转换器导通截止的时间进而控制电压输出的大小，输出电压至负载LED灯具达成调节LED灯具亮度的目的。

We are a group of Form 6 students who are now joining a Liberal Studies Project Competition organized by the Chinese University of Hong Kong. We would like to conduct a survey to explore whether the educational level of the staff in the Canossa Hospital will affect their attitude towards the effectiveness

你好！我们是中六学生，参加了中文大学所举办的专题研究比赛，我们希望研究嘉诺撤医院的员工的教育程度令代们对医院有所采用到的节约能源设备/设计效用的影响，所有资料只作分析以及会保密。

The SJMC took tea to China during an intensive, three-week Advertising a2b course at Shanghai International Studies University last month.Senior Instructor Mindy Kiger Cheval and Associate Professor David Slayden gave 50 students and 10 advertising professionals a crash-course on American advertising.

6月17日，美国科罗拉多大学校园网的《热点追踪》栏目刊登了名为《把茶叶销往中国市场挑战广告专业学生》（Selling tea to China challenges advertising students）的图片专题文章，以生动的描述回顾了举办于今年5月的科大新闻传播学院和我校新闻传播学院的合作项目――"广告a2b"项目，对项目的成功举办给予高度评价。

In order to effectively prevent from and strike down crimes, Chinese criminology research in the 21st century should make efforts in the following ways: further strengthening the research on basic theories of criminology so as to supply the decision-making body with the high quality research accomplishments; deepening the monographic study on the problems of crime so as to serve the practice of fighting against crime; improving the approach to research on criminological theories so as to enhanc...

为了更加有效地预防和打击犯罪，2 1世纪的中国犯罪学研究应当做到：进一步加强犯罪问题基础理论研究，为决策层提供高质量的科研成果；深入开展有关犯罪问题的专题研究，为与犯罪作斗争的实践服务；改进犯罪学理论研究的方法，提高犯罪学理论研究的深度与实用性。

So far,a limited number of research papers are related to dynamic response of long-span flexible roofs.Gymnasium roof is a special topic of long-span flexible roof structures,a-nd it is important to study on wind load and gust loading factor in the field of engineering and research.

目前国内外对大跨度柔性屋盖的风振响应研究很少，本文研究的体育馆屋盖结构的风荷载及风振系数作为大跨度柔性屋盖结构的一个专题，具有重要的工程应用价值和学术研究意义。

International Studies in the German Democratic Republic.

这些属于国际政治学的专题著述，能在一个小口上切得很深，把相关的资料或争论包揽无遗，对有兴趣的读者实在有益；而且，我想加一句的是，它们的数量相当多，尽可任不同志向、趣向的学生和批评家深究点评。

The results showed that the experimental curricula of our faculty have many disadvantages, such as limited types of evaluators, outdated approaches for evaluation, less characteristics and incomprehensive evaluation system, which need to be improved. Thus, according to the teaching methods and characteristics of our four-leveled experimental curricula i.e.

因此，针对华东师范大学生命科学学院构建的基础生物实验课程、探究型综合生物实验课程、开放型专题研究实验课程和实践活动这四个层次的实验课程的教学组织方式和特点，以每个层次中的一门课程为代表，分别设计了相应的学习评价体系。

Institutive studying is a positive, active andassociative. It is based on students' interest with the help of the teachers. And it also choosesthe institutive professional topics from nature , society and your own living life and getsknowledge ,uses practical knowledge and solves the problem .

研究性学习是一种积极的、生动的、自主合作探究的学习方式，它是基于学生自身兴趣，在教师的指导下，从自然、社会和自身生活中选择和确定研究专题，主动地获取知识、应用知识、解决问题的学习活动。

Systems of inqualities,the minimum or maximum of a convex function over a convex set,Lagrange multipliers,and minimax theorems are among the topic treated,as well as basic results about the structure of convex sets and continuity and differentiability of convex functions and saddle-functions.

其中对不等式系统、凸集上的凸函数的极小或极大、拉格朗日乘子和极小极大定理做了专题论述，同时对凸集的结构和连续性以及凸函数的可微性和鞍点函数的基本结果做了介绍。

This paper described a experiment study of remote sensing systematic analysis on natural resource and environment Change monitoring. Main methods concern changed factor extraction through the brightness statistics, ratio and texture analysis; matching multi-temporal remote sensing data, normalized difference comparison,"brightness" and "greenness" difference analysis of principal components method by using image processing system; updating renewable natural resources changed map through overlaying or partly revising multi-temporal maps by using geographical information system; establishing mathematic model, such as: variable correlation regional regression and tendency surface analysis etc., for researching renewable natural resource change law.

本文叙述了有关资源环境动态遥感监测研究方面的初步探索性工作，主要包括利用图像处理系统，根据专题变化因素的光谱亮度统计进行密度、比值和纹理处理、不同时期遥感信息的复合处理和规一化差值及主成分分析法的"亮度"、"绿度"差值分析；利用地理信息系统，采用覆盖分析和局部更新法进行再生资源变化图件的快速更新，以及为研究再生资源动态变化规律，而进行的多变量相关、区域回归分析方法。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！