海洋生物含有机癌物质(英文)

Researchers seeking treaments for cancer are leaving no stone—or sand pebble(小鹅卵石)—unturned(未翻转的)as they look to the sea for answers. Adrian and colleague Peter Collin, a researcher with Coastside Research,a marine drug discovery company in Stonington, Me., have discovered a anti-cancer extract(汁)     

她命中注定英年早逝吗？(英文)

When you worry about your health,chances are you think about drinking more water or getting a Pap test.But in developing nations around the world,millions of young women are engaged in a battle against health problems that are shockingly simple to fight-health problems we don't even give a thought to. As mind-boggling as it is.approximately 3 million women and girl-in countries as far away as Bangladesh and as near as Mexico-could die this year of tuberculosis,pneumonia and other preventable diseases that doctors have known how to treat for decades. \"There was a huge public outcry a few years ago when a young woman in Vermont died of malaria,\"notes Nils Daulaire,M.D.,president and CEO of the Global Health Council \"It was a tragedy,but one that happens every hour in the developing world.\"     

无位置传感器无刷直流电机无反转起动方法(英文)

为了实现无位置传感器无刷直流电机的无反转起动及平滑切换,提出了一种新的无位置传感器无刷直流电机起动及切换方法.该方法依据电机定子铁芯饱和效应,采用6个短时电压脉冲检测转子初始位置,可将转子定位在60°范围内,然后采用长短电压脉冲相结合的方式加速电机同时利用电流响应的变化动态检测转子位置,当转速上升到可以检测到反电势过零点时,关闭电机驱动电路,根据端电压波形和导通相之间的对应关系确定切换时刻,可将电机平滑切换至反电动势换相运行方式.样机试验结果验证了上述方法的可行性和有效性.     

数数总是管用的吗？(英文)

A young man couldn’t sleep well every night. He was always worried. So he went to see the doctor. The doctolooked over him carefully, but there was nothing wrong with him. The doctor told him to count from one to ten againand again.“Keep doing it till you fall asleep.”the doctor said.A few days later, the young man came to the doctor again. But to his surprise, the doctor found the young man waeven worse than before.“Didn’t you do as what I told you?”the doctor asked.“Yes, I did,”he…     

本期英文文摘(英文)

’98上海远距离开放教育国际研讨会于今年4月15日至17日在上海电视大学召开。本次会议云集国内外百余名专家学者,并收到论文近百篇,其中相当部分具有较高学术价值。为让广大读者了解这次会议,本刊除刊登部分中文文稿全文外,还将在本栏陆续刊登与会专家学者的部分英文文稿摘要。读者若对英文文摘稿产生兴趣并欲了解原文,可来函与编辑部联系。     

本期英文文摘(英文)

ＳＴＶＵ ,ＡＭｏｄｅｌｉｎＡｓｉａｉｎｉｔｓ 50 ?ＷａｎｇＹｉｂｉｎ　　ＳＴＶＵｂｅｃａｍｅａｍｏｄｅｌｏｆｏｐｅｎｕｎｉｖｅｒｓｉｔｙｉｎＣｈｉｎａｉｎ 4 0ｙｅａｒｓ,ＩｐｅｒｓｏｎａｌｌｙｗｏｕｌｄｌｉｋｅｔｏｒａｉｓｅａｎｄｐｒｏｐｏｓｅａｖｉｓｉｏｎｆｏｒＳＴＶＵｔｏｂｅａｍｏｄｅｌｏｆｏｐｅｎｕｎｉｖｅｒｓｉｔｙｉｎＡｓｉａａｔｉｔｓ 50ｓ.Ｔｈｉｓｉｓｎｏｔｉｍｐｏｓｓｉｂｌｅ .Ｈｏｗｅｖｅｒ,ｔｏｍａｋｅｔｈｅｖｉｓｉｏｎａｒｅａｌｉｔｙ ,ｒｅｑｕｉｒｅｓｎｅｗｔｈｉｎｋｉｎｇ,ｎｅｗｍ…     

本期英文文摘(英文)

ＴｈｅＮｅｃｅｓｓｉｔｙａｎｄＣｅｒｔａｉｎｔｙｏｆＤｅｖｅｌｏｐｉｎｇＤｉｓｔａｎｃｅＥｄｕｃａｔｉｏｎｂｙＺｈａｎｇＤｅｍｉｎｇ　　ＯｎＪａｎｕａｒｙ 2 4ｔｈｏｆ2 0 0 0 ,ＳｈａｎｇｈａｉＤｉｓｔａｎｃｅＥｄｕｃａｔｉｏｎＢｌｏｃｗａｓｆｏｕｎｄｅｄ,ａｓａｎｅｃｅｓ ｓｉｔｙｏｆｔｈｅｆｕｒｔｈｅｒｉｎｇｏｆＳｈａｎｇｈａｉｅｄｕｃａｔｉｏｎａｌｒｅｆｏｒｍａｎｄｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｅｄｕｃａｔｉｏｎｉｎｄｕｓ ｔｒｙｆｏｒｔｈｅｐｕｒｐｏｓｅｏｆｓｅｒｖｉｎｇｅｃｏｎｏｍｉｃｃｏ…     

本期英文文摘(英文)

ＣｏｎｔｉｎｕｉｎｇＥｄｕｃａｔｉｏｎｉｎａＧｌｏｂａｌｉｚｅｄａｎｄＫｎｏｗｌｅｄｇｅ -ｂａｓｅｄＥｃｏｎｏｍｙＷａｎｇＹｉｂｉｎ　　Ｉｎｔｈｅｎｅｗｓｏｃｉａｌｐａｒａｄｉｇｍｏｆｇｌｏｂａｌｉｚａｔｉｏｎａｎｄｋｎｏｗｌｅｄｇｅ ｂａｓｅｄｅｃｏｎｏｍｙ ,ｔｈｅｇｕｉｄｅｌｉｎｅｗｉｌｌｂｅｇｌｏｂａｌｓｋｉｌｌｓ ,ｉｎｔｅｒｎａｔｉｏｎａｌｕｎｄｅｒｓｔａｎｄｉｎｇ ,ｎｅｗｔｅｃｈｎｏｌｏｇｙ ,ｉｎｆｏｒｍａｔｉｏｎ ,ｋｎｏｗｌｅｄｇｅａｎｄｗｉｓｄｏｍ .Ｔｈｉｓｎｅｃｅｓｓｉｔａｔｅｓ…     

你知道保持健康的规则吗？(英文)

Good health is necessary to happiness and success. If we do not have good health, how can we work hard? And ifwe cannot work hard, how can we succeed and how can we be happy? Money can do many things and make one enjoythe world in many ways, but it has no meaning to one who is not in good health.A number of useful rules can do much to make good health, if we follow them.Firstly, we must take food at regular times (定时) and never too much.Secondly, keep our rooms airy. Fresh air is essential…     

你同意对宠物实施安乐死吗？(英文)

提高英语局面表达能力不一定非得通过写长篇大论来练习。我们新近开辟的这个版块就是希望能让读者朋友在点滴练习中受益。每期一个“争议话题”,把你的观点用英文表达出来,告诉我们。我们会刊登点评精彩的片断,并向入选文字的作者寄送奖品!     

无重叠视域摄像机网络拓扑自适应学习方法(英文)

提出一种自适应拓扑学习方法来无监督地学习摄像机网络的拓扑.利用混合高斯算法建立节点模型,并通过计算节点对的互关联函数得到该对节点的连通性以及连通节点对的转移时间分布.利用交互信息计算连通的节点对的转移概率.对学习到的拓扑结构,提出虚假连接排除策略以及拓扑更新策略对其进行优化.为了测试所提出算法的有效性,搭建了由5个不包含重叠视域的摄像机组成的监控系统进行试验.通过与已有算法的对比,结果表明该算法可以更准确地学习监控网络的拓扑,并对环境变化有一定的鲁棒性.     

以太无源光网络接收机的建模(英文)

建立了以太无源光网络接受机的行为模型,该模型包括光纤、光电探测器、跨阻放大器、限幅放大器及时钟和数据恢复电路.模型中各部分都是利用电路结构和行为特性来进行建模的,同时也对它们的噪声和抖动进行了建模,如散粒噪声、热噪声、确定性抖动和随机抖动.由于使用了行为模型,仿真速度比普通电路模型更快,同时比解析模型更准确.整个模型用C + +语言描述,在Microsoft Visual C + +6.0 中进行实现,并利用蒙特卡洛方法对系统仿真.最后建立了测试环境对模型进行验证,结果表明仿真结果与实验结果有较好的一致性.     

谜语(英文)

1. What kind of table has no legs?2. What is the most difficult key to turn?3. What has an eye but connot see?4. What star is not seen in the sky?5. What can you see with your eyes shut?6. What flower can you eat?     

回家(英文)

本期《读吧》栏目选取了几篇精美的英文请同学们欣赏。这些文章有同龄高中生的生活记叙,也有著名诗人的智慧感悟;有平凡动人的父子深情,也有摇曳生姿的离愁别绪。有兴趣的同学可以试着把这些文章翻译出来,用中文来表达这些或婉转优美,或恢宏大气,或清丽淡雅的佳作。优秀的翻译作品我们将会在《高中生》上选发,或刊登到中国高中生网(www.gzs.cn)上。     

足迹(英文)

In the serene Maui twilight,streaks of crimson1 and fieryblazes lingering from the scorching summer day begin tofade upon the magnificent dusky velvet stage.She bendsdown to unfasten the silver clasp on her sandals,and Icling tightly to her free hand to balance,while sliding mine     

猜猜看(英文)

1.Without a sound I speak,I am small,light and fast.I express others' thoughts,And travel without feet.Who am I?     

笑话(英文)

Poisonous snakes 毒蛇 There are two snakes.The father snake and his son are out on a nice afternoon.When they are enjoying the beautiful flowers,the son asks,\"Dad,are we poisonous snakes?\"the father says proudly,\"Yes,we are     

爬山(英文)

Last Sunday,we went on climbing. When we reached the foot of the mountain,we all were very excited. At first, we talked while we were climbing. But when we got to the half of the mountain,everyone felt tired,many of us sat