单词:photoelectric safety device
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TEXT Seen through the eyes of a young friend Einstein was a simple, modest and ordinary man. The professor and the Yo-yo My father was a close friend of Albert Einstein. As a shy young visitor to Einstein's home, I was made to feel at ease when Einst
Broadcast: Jan 15, 2003 By Jerilyn Watson This is the VOA Special English Health Report. Many millions of people around the world suffer from problems of the small intestine. Bleeding from abnormal gr
New Device Detects Pilot Blackouts WASHINGTON During certain maneuvers, jet fighter pilots sometimes experience loss of vision and even loss of consciousness. Although short, these so-called blackouts can have tragic consequences. An Israeli company
Food safety seems to be a big issue nowadays. I cant remember it being such a big problem years ago. With todays technology, it shouldnt be a problem. But it is. In fact, there are many problems. In my country, GM food is a big issue. People do not w
Science and technology. 科技。 Photoelectric cells. 光电池。 To dye for. 利用染料进行能量转化。 A new type of cell may bring solar energy indoors. 一种新型电池也许能带来室内太阳能。 THE phrase indoor solar power sou
四六级阅读占考试的比重很大,很多考友也为阅读烦恼不已,该怎么办呢?两个字:多看! 所以,从今天开始,每天会节选一些文章和大家一起阅读。 接
The One With The Giant Poking Device 本集简介: Phoebe avoids going to the dentist because whenever she goes, someone dies. Joey tells Chandler about Janice kissing her husband, and Chandler confronts her. She must chose between the two men she l
Scientists know all about the therapeutics qualities of blue and red light. But until know, sufferers of acne have to go to hospital to benefit from it. But Lumie, the manufactures of this new LED device hope it would see light therapy moving to the
Device Keeps Internet On When Power Goes Off Erik Hersman and his team in Nairobi have created what they say is the first router made especially for Africa. It's battery powered and rugged. And it's gaining attention in Europe and the United States.
印度政府日前推出了一款世界上最便宜的笔记本电脑,售价仅为35美元。据印度人力资源开发部长介绍,这款低成本的触摸屏电脑的主要针对用户为学生,计算机的主板、芯片、处理器、内存和
Al Gore accepted the Nobel Peace Prize in 2007 along with Rajendra Pachauri accepting on behalf of the UN's intergovernmental panel on climate change for their work to sound the alarm over global warming. The Six Nobel Prizes are traditionally awarde
Science and Technolgy. 科技。 Photoelectric cells. 光电池。 To dye for. 染料光电池。 A new type of cell may bring solar energy indoors. 一种新型电池有望将太阳能引进室内。 THE phrase indoor solar power sounds like an oxym
HEALTH REPORT – Safety Questions About Drugs By Jill Moss Broadcast: Wednesday, December 22, 2004 I'm Gwen Outen with the VOA Special English Health Report. Several pain medicines in the United Stat
But the landmark eventthe dawn of a new agecame in 1905, when there appeared in the German physics journal Annalen der Physik a series of papers by a young Swiss bureaucrat who had no university affiliation, no access to a laboratory, and the regular
Science and technology 科学技术 Photoelectric cells 光电池 To dye for 染料光电池 A new type of cell may bring solar energy indoors 一种新型电池有望将太阳能引进室内 THE phrase indoor solar power sounds like an oxymoron. 室内
BEIJING, March 29 (Xinhua) -- The State Council, China's cabinet, has approved a draft of regulations on school bus safety management, according to a statement issued Thursday. The statement, released after a State Council meeting presided over by Pr
BEIJING, Feb. 26 (Xinhua) -- China's Ministry of Education on Tuesday reiterated it will fully implement the school bus safety regulation after some local schools were not aware of the new rules. A number of illegal kindergartens are still using disq
Marie Curie was born in 1867. She is one of the greatest scientists ever to have lived. She was a pioneer in the field of radioactivity and discovered the chemical elements radium and polonium. Curie is the only person ever to win two Nobel Prizes in
assure vt.向(某人)保证 I can assure you that this is the best restaurant in town. 我向你保证,这是城里最棒的一家餐厅。 Sam wasn't able to assure her of his support. 山姆无法向她保证要支持她。 assurance n.保证;