单词：laser fundamental
单词：laser fundamental 相关文章
By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
2013年VOA慢速英语(二)月
New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl
VOA标准英语2014年(二月)
托福口语，作为托福考试中提分难度较大的一门，令很多同学头痛不已。今天新东方网留学频道特为大家分享孟炎老师解答的托福口语问题系列。为同学们的托福口语考试指明方向! 评分标准哪
托福英语
托福口语，作为托福考试中提分难度较大的一门，令很多同学头痛不已。今天新东方网留学频道特为大家分享孟炎老师解答的托福口语问题系列。为同学们的托福口语考试指明方向! 评分标准哪
新托福写作真题解析
The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network
2017年VOA慢速英语(七)月
This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke
2005年NPR美国国家公共电台
President Obama's latest nominee to the US Supreme Court, Elena Kagan, says she's grateful for what she called the honor of a lifetime. Mr. Obama says he chose Kagan in part because she understands that law is not an intellectual exercise, a thought
2010年NPR美国国家公共电台5月
The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci
2013年VOA慢速英语(五)月
EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one
2012年VOA慢速英语(一)月
I have to trust the orchestra, 必须信任乐队， and, even more crucially, I have to trust myself. 更关键的我必须信任自己。 Think about it: when you're in a position of not trusting, 试想一下：如果你处在没有信任的状况下
TED演讲娱乐篇
Now one of things that I believe is that change not only requires an understanding of human nature, change also requires clear-eyed realism, change requires a deep understanding of what is wrong, so that means, for example, understanding all of issue
财富精英励志演讲
网友：老师好!过两天考试了，好紧张!老师，您认为6和7真的差距很大吗?怎样才能拿到7呢?万一真的不幸遇到一位印度考官而我基本上同不懂他的口音，怎么办呢?老师帮我提前支支招好吗?谢谢
雅思英语
模仿文本：Welcome to Four Thought. Glass is all around us. Now here, of course, this is the BBC, we're in a dark basement underneath Somerset House. Perhaps because glass is transparent, because sometimes it appears as if it's not there at all.
英音模仿秀
Books and Arts; Book Review; Fundamental physics; Big bang; 文艺；书评；基础物理学；宇宙大爆炸； Popular physics has enjoyed a new-found regard. Now comes a brave attempt to inject mathematics into an otherwise fashionable subject 科
经济学人文艺系列
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
VOA常速英语2007年（十一月）
The geriatrician will intervene late in the day, 老年医学医生会在一个人老化过程的后段， when pathology is becoming evident, 病理越来越明显的时候， and the geriatrician will try and hold back the sands of time, 做治疗来
TED演讲科学篇
HARI SREENIVASAN: Today's decision on marriage sent waves of reaction across the country, beginning with a large crowd gathered on the Supreme Court steps. Political director Lisa Desjardins takes us there. LISA DESJARDINS: This is the decision from
PBS访谈社会系列