规则脉动激光器

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(145) / 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(130) / 评论(0) 分类 2013年VOA慢速英语(二)月

Flight control is Brazilian. 飞行管制是巴西人发明的。 So we went together with these guys and we basically put this exoskeleton together, 那么我们和这些患者一起我们把骨骼机器人组装好, 15 degrees of freedom, hydraul

发表于:2018-12-30 / 阅读(123) / 评论(0) 分类 TED演讲科技篇

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(142) / 评论(0) 分类 2017年VOA慢速英语(七)月

Oksana Dragan A music disc jockey who honed his skills in fundamentalist Iran is now a fixture of the Washington D.C. music scene, particularly among the 28 thousand or so Iranians living in the Unite

发表于:2019-01-03 / 阅读(339) / 评论(0) 分类 VOA2004(上)--艺术专集

Declassify US government documents and witness testimony from former or retired US military personnel confirm beyong any doubt the reality of ongoing UFO incursions at nuclear weapon sites. When I say UFO, the witnesses have described this craft as d

发表于:2019-01-08 / 阅读(169) / 评论(0) 分类 CNN2010年(十)月

The other day my 3-year old God son and I were pillow fighting when he sat down, panting, and said with surprise, I can feel my heart beating! Sometimes it takes little kids to remind us just how amazing our bodies are. Scientists believe that an are

发表于:2019-01-08 / 阅读(161) / 评论(0) 分类 Scientific American(十一)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

发表于:2019-01-12 / 阅读(196) / 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(168) / 评论(0) 分类 2012年VOA慢速英语(一)月

We're going to go on a dive to the deep sea, 好了,我们即将潜入海底深处。 and anyone that's had that lovely opportunity knows that for about two and half hours on the way down, 任何一个有过这种美妙机会的人都知道,在这两

发表于:2019-01-18 / 阅读(121) / 评论(0) 分类 TED演讲教育篇

Russia's Kamchatka Peninsula is known for its volcanic and seismic activity, but not since the 1960s has a new geyser appeared here. A ranger in the Kronotsky Nature Reserve was the first to see the column of boiling liquid last month. Another observ

发表于:2019-01-22 / 阅读(135) / 评论(0) 分类 自然百科2009年

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(170) / 评论(0) 分类 VOA常速英语2007年(十一月)

Falling 一落千丈 After the burst of excitement that accompanied the release of Macintosh, 麦金塔电脑刚发布时引发了一阵热潮, its sales began to taper off in the second half of 1984. 但到1984年下半年,其销量就开始急剧

发表于:2019-02-02 / 阅读(110) / 评论(0) 分类 乔布斯传

ROME, Jan. 9 (Xinhua) -- Zlatan Ibrahimovic scored deep into injury time(伤停补时) to secure Serie A leaders AC Milan a thrilling 4-4 draw with Udinese at home on Sunday. Inter managed to make up their lost ground under newly- appointed coach Leo

发表于:2019-02-03 / 阅读(132) / 评论(0) 分类 英语新闻

BILBAO, Spain, April 26 (Xinhua) -- Fernando Llorente scored a last minute goal to qualify Athletic Club Bilbao for the final of the Europa League on Thursday. Llorente forced the ball home from close range following great work from Ibai Gomez to giv

发表于:2019-02-05 / 阅读(220) / 评论(0) 分类 英语新闻

Inter beat Catania to maintain pressure on Juventus ROME, Oct. 21 (Xinhua) -- Inter beat Catania 2-0 at home on Sunday to keep in touch with Italian Serie A pacesetters Juventus. Inter went ahead in the 28th minute when Antonio Cassano converted from

发表于:2019-02-07 / 阅读(166) / 评论(0) 分类 英语新闻

Man United hands nine-man Chelsea first league defeat of season LONDON, Oct. 28 (Xinhua) -- European champions Chelsea were hit by two red cards in an intensely contested match and defeated by Manchester United 3-2 at Stamford Bridge on Sunday. The v

发表于:2019-02-08 / 阅读(154) / 评论(0) 分类 英语新闻

Led Zeppelin will soon release a series of deluxe editions of all nine of their studio albums. The first batch will include the bands first three recordings between 1969 and 1970. And several previously unreleased songs will also be part of the packa

发表于:2019-02-18 / 阅读(188) / 评论(0) 分类 CCTV9英语新闻2014年04月

High-tech sanitation 高科技环卫 Race to the bottom 抄底竞价 A rush to buy Japanese toilet-seats prompts soul-searching in China 赶着趟购买日本马桶盖引出中国的自我反省 JAPAN is often viewed with antipathy in China, but incr

发表于:2019-02-24 / 阅读(218) / 评论(0) 分类 经济学人文艺系列

The World Health Organization is calling for urgent action to make sure all people reach old age in the best possible health. To mark this years World Health Day, WHO says good health is essential for maintaining a good quality of life as people get

发表于:2019-02-25 / 阅读(171) / 评论(0) 分类 英语新闻
学英语单词
acceptable principle
actuarial value
adhering water
apobec
as slick as nothing at all
authencator
auto tire
auxiliary power unit (apu)
b-to-b
Basic fibre
beam drop
benji
biocompasses
brushite
C to C
Camden, William
capital of unfinished construction work
CBOC
cocktaileries
coltishly
d'antuono
Dampier I.
declenperone
direct driver
double-edged sword
electric resistance butt welded tube
electric weld pipe mill
electrical conversion factor
epilepsia vertiginosa
fiftieth-normal solution
fixed incomes
fracture of articular process
front vertex
full-immersion thermometer
gear roll finishing machine
genus Calycanthus
gladdons
granuloma of small intestine
Guichicovi
H.T.supply
habe
Hittitology
illustriousness
impregnated insulation paper
Isoramanone
Kidatu
left heart insufficiency
logout analysis reference
major premise
megaLIPS,megalips
mercury vapour analyzer
micro drill
moneyed resources
munter
nest scrape
non idiomatic
noninflammable
novelty twister
olfactory foramen
olona
ore deposit dewatering
partners.
path name
peki
permissible dimensional error
permissivities
personal video recorders
phase-regulated rectifier
PhEEM
phenazinyl
plymax
pre-treatment
principle of minimum dissipation of energy
pryeria sinica moore
queatch
red-eared slider
regnery
reverse flow cooling system
sample divider pass
sciniphs
sedarim
shaggymane mushrooms
sigatokas
storied ray
strs
submillimeter wave
superoperators
swim ear
thermal conductivity gas analyzer
throttlebottom
torsion thermobalance
translog cost function
tynchal
umbiliciform
un-hydrated
vector counter
vertical contact comb
vertical tube flash evaporator
walking shark
worked against
zebra-crossings