二维激光

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

发表于:2018-12-08 / 阅读(117) / 评论(0) 分类 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

发表于:2018-12-16 / 阅读(101) / 评论(0) 分类 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

发表于:2018-12-16 / 阅读(85) / 评论(0) 分类 VOA标准英语2014年(二月)

Looking Into Your Brain Just Became Easier Researchers and engineers keep improving the machines that help doctors better understand and diagnose conditions that affect our brains. One of the goals is to find causes of Alzheimers and Parkinsons disea

发表于:2018-12-16 / 阅读(99) / 评论(0) 分类 VOA标准英语2016年(六月)

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

发表于:2019-01-02 / 阅读(115) / 评论(0) 分类 2017年VOA慢速英语(七)月

Doctors Have a New Tool to Identify Breast Cancer Breast cancer is the most common cancer in women worldwide. Early discovery and treatment can save lives. Scientists are working new ways to recognize breast cancer while at the same time studying exi

发表于:2019-01-03 / 阅读(100) / 评论(0) 分类 2018年VOA慢速英语(一)月

As the richest man in the world, Bill Gates is no stranger to success. 作为这个世界上最富有的人,比尔盖茨对成功并不陌生。 So when the billionaire tech mogul and philanthropist offers insight or advice, it's smart to listen. 所

发表于:2019-01-03 / 阅读(105) / 评论(0) 分类 实用英语

This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? The 2010 Nobel Prize in Physics goes to the University of Manchesters Andre Geim and Konstantin Novoselov for their investigations of the two-dimensional material graphene

发表于:2019-01-08 / 阅读(142) / 评论(0) 分类 Scientific American(十)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

发表于:2019-01-08 / 阅读(175) / 评论(0) 分类 2005年NPR美国国家公共电台

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

发表于:2019-01-12 / 阅读(162) / 评论(0) 分类 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

发表于:2019-01-12 / 阅读(131) / 评论(0) 分类 2012年VOA慢速英语(一)月

3-D Technology Saves Lives 3D技术拯救生命 From VOA Learning English, this is the Health Report. Three-dimensional technology -- known as three-D -- gives depth to objects that would otherwise appear two-dimensional, or flat. Three-D makes movie

发表于:2019-01-12 / 阅读(106) / 评论(0) 分类 2014年VOA慢速英语(七)月

请看相关报道: Quick Response codes(QR code) have been used in advertisements for years, and a handful of American funeral homes began attaching them to gravestones in early 2011. 快速回应码在广告界已经使用好几年了,有一部分

发表于:2019-01-18 / 阅读(122) / 评论(0) 分类 英文语法词汇

And then our mothers tell us, Careful you don't fall down, because you'll fall over. 然后母亲告诉我们,没有跌倒也要小心,因为你还会掉下来。 Now, go into the real atmosphere of this planet. 现在,进入这个行星真正的

发表于:2019-01-18 / 阅读(123) / 评论(0) 分类 TED演讲娱乐篇

Well, it's the relative importance. 就是二者间的相对重要性。 You would say-yeah, yeah, yeah, we all know this;water covers twice the area of the planet than dry land. 也许你会说,是,是,是,我们都知道,地球上水覆盖的

发表于:2019-01-18 / 阅读(93) / 评论(0) 分类 TED演讲娱乐篇

Genome: Now in 3-D! In a study in the journal Science, researchers report the mapping of the three-dimensional structure of the human genome, and the finding that the cell's nucleus is divided into two regions, one where DNA goes to get expressed. Cy

发表于:2019-01-30 / 阅读(154) / 评论(0) 分类 60秒科学

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

发表于:2019-01-31 / 阅读(138) / 评论(0) 分类 VOA常速英语2007年(十一月)

2009年的一部3D大片《阿凡达》让很多人都记住了avatar这个词。在网络上搜索这个词,出来的结果大部分也都跟这部电影有关。其实,avatar并不是导演造的一个词,它在印度教中指圣人的化身。

发表于:2019-02-06 / 阅读(123) / 评论(0) 分类 英语口语

An employee carefully scans a man standing still behind two photographic lamps with a gun-like scanner in his hand. The whole process takes approximately 10 minutes. After loading the data into the computer, the rest work is left to the 3-D printing

发表于:2019-02-14 / 阅读(121) / 评论(0) 分类 英闻天下

So I'd like to propose that we can combine those two worlds, that we can combine the world of the nanoscale programmable adaptive materials and the built environment. 所以我建议把这两个世界结合起来,把纳米级上可程序化、能自我

发表于:2019-02-21 / 阅读(81) / 评论(0) 分类 TED演讲教育篇
学英语单词
A mackerel sky is never long dry.
Acetylkitasamycin
aero tire
al qatranah (el qatrana)
aliona
alkyl urea
arabinose phenylhydrazone
auxiliary plane of projection
Berekua
bolderson
buccally
capital stock registered
carbon dioxide extinguishing system
carriage of vehicle
Chladni figure
close prisoner
colignies
control point selector
contustion
crestatron
DHPU
diaclase
double blade mace
double resonator
dreadest
Einchocaine
ejaculations
electrostatic desalting
emergency landings
english springer spanial
event handling
extremely hard conditions
fetlock luxation
finder charge
fishin
flappin
free-quarter
Goldwyn
grandfather tape
Haboro
haplophytine
Heavenly Witnesses
hedge off
in rank
individual farm
initialized
instantaneous receiver bnadwidth
interim closing
international framework for trade
japan currents
Kuhm plates
laser fibre
lichen pine forest
lithofellic acid
makalus
meander-line travelling wave tube
mesh grid
Miramar
money card
nylen
on the premise
partially under hung rudder
party fishing boat
Pearl Harbor attack
persistent tremor
photodynamic substance
photolithographic process
Pieszyce
pontile apoplexy
porous graphite containing bronze bearing
pre-versions
program transformation method
puck-carrier
rabbited
ranold
reconciliation statement of account
right quick
Sabon Gida
security safeguards
semi-vowel
simple stairway
site boundary
snailiest
starter homes
steady-state regulation
stephanodiscus hantzschii
surf rock
tantalise
Tere-Khol', Ozero
theoretical cylinder force
thermo fuse
Tubize
valence of antigen
vernier theodolite
vertical velocity indicator
viciousnesses
visible polygon
Vocontii
whorehouses
Wiesel's paraganglion
Win95
wrist breadth