[电] 串级放大

Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头,盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

发表于:2018-12-07 / 阅读(87) / 评论(0) 分类 美丽新世界

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(84) / 评论(0) 分类 2013年VOA慢速英语(二)月

BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

发表于:2018-12-20 / 阅读(81) / 评论(0) 分类 中英双语新闻

This is Scientific American's 60s Science. I'm Karen Hopkin. This will just take a minute. Think about the tools used by biologists, perhaps test tubes and microscopes come to mind. But what about diapers? No, it's not the investigators in their work

发表于:2018-12-24 / 阅读(87) / 评论(0) 分类 2015年Scientific American(一)月

In my lab, we recently made a cancer nanodetector 在我的实验室,我们最近研制出了一种癌症纳米检测器, that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。

发表于:2019-01-03 / 阅读(100) / 评论(0) 分类 TED演讲科学篇

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

发表于:2019-01-08 / 阅读(84) / 评论(0) 分类 Scientific American(十)月

This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

发表于:2019-01-08 / 阅读(103) / 评论(0) 分类 Scientific American(三)月

PARIS, Jan. 2 (Xinhua) -- Spain-based midfielder Yohan Mollo joined French top league club AS Nancy Lorraine on loan from Grenade, the club said on Monday. Mollo, 22, will play with AS Nancy Lorraine for six month with possibility to be recruited by

发表于:2019-01-09 / 阅读(124) / 评论(0) 分类 英语新闻

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(141) / 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(101) / 评论(0) 分类 2012年VOA慢速英语(一)月

'Word on Street' Impacted Language in 2011 While 2011 is over, some of the words that came to define the past year are still very much with us, and may be for years to come. Since 2011 was an especially busy year for grassroots political action, many

发表于:2019-01-13 / 阅读(75) / 评论(0) 分类 VOA标准英语2012年(一月)

Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为,我是说,耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

发表于:2019-01-18 / 阅读(79) / 评论(0) 分类 TED演讲国际问题篇

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 science of the future to eve

发表于:2019-01-24 / 阅读(127) / 评论(0) 分类 英语语言学习

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(117) / 评论(0) 分类 VOA常速英语2007年(十一月)

MOSCOW, May 23 (Xinhua) -- The 2013 Summer Universiade will take place from July 6 to July 17 in Russian city Kazan, the Kazan 2013 Organizing Committee said on Monday. Russian first deputy Prime Minister and the committee's chairman Igor Shuvalov an

发表于:2019-02-06 / 阅读(97) / 评论(0) 分类 英语新闻

MOSCOW, Dec. 5 (Xinhua) -- Around 9,500 athletes are expected to participate in the 2013 Kazan Universiade, Russian Sports Minister Vitaly Mutko said Wednesday. We think that 9,500 athletes will take part, plus 1,500 to 2,000 coaches and specialists,

发表于:2019-02-09 / 阅读(121) / 评论(0) 分类 英语新闻

Spain midfielder Cazorla defends Casillas over recent form MADRID, Oct. 10 (Xinhua) -- Spain midfielder, Santi Cazorla strongly defended the form of goalkeeper Iker Casillas on Wednesday as the Spanish national side prepared to fly to Minsk ahead of

发表于:2019-02-13 / 阅读(112) / 评论(0) 分类 英语新闻

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo

发表于:2019-02-14 / 阅读(89) / 评论(0) 分类 2018年科学美国人10月

音乐咖啡厅:Bertie higgins - Casablance 相关介绍:谈起演唱《Casablanca》的Bertie Higgins,他的曾曾祖父是浮士德的作者,德国诗人哥德(Johann Wolfgang Von Goethe)。Bertie Higgins原名 Elbert Joseph Higgins。他的

发表于:2019-02-19 / 阅读(157) / 评论(0) 分类 音乐咖啡厅

The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen

发表于:2019-02-25 / 阅读(108) / 评论(0) 分类 双语有声阅读
学英语单词
3-chloro-1-propyne
agendas
alkali-proof test
antiprostatitis
Apidium
appendicocele
aptote
astrangalectomy
axially of coordinate
back of ore
block anode
blood plasue
blue copperas chalcanthite
bread molds
buckler
caretake
chocolate-mint
cluse
corrected visual acuity
cradle cap
cutting unit
Daboecia
deenergisation
deiced
delayed neutron logging
dependency-prone
depnes
digiti
distributary mouth bar
disturbed
Donaldson's test
dovecote, dovecot
Dunmanus
elevator system
Epfendorf
execute phase
finisterre
genus Aepyornis
Glendaruel
grafica
grid structure
have no heart for sth
heathiest
intraventricular pressure
iron foot valve
Jack at a pinch
John Coltrane
laurel leaf
leontjev
life-rent
loose avalanche
Maitland, Mt.
mumblin'
muscular tissues
myrio
nano-coulombs
output queue table
overfloated
overstraw
pass sth down
patra
peranema aspidioides
petty sessions
phenylarsine oxide
pituitary-gonadal axis
pleuropneumonic
predation
predetermined orientation
prepossess with
pseudoqueen
radiometric inspection
reference name
revarnish
Rhizophagidae
rifomycin
Roof of the World
rubber sheeter
seismic code
service discovery
smiths coupling
smoke-up
Spiro's test
spondyloptosis
square opening
stage-setting
standards of reporting
steelite
stonelet
sub-limit
superinducing
thermal radiation law
Tombetsu-gawa
tomorrow next
total emitter current
tower head
trichophagia
tricot cut
two-sided exponential
video and graphics signal processor
wear to a shadow
worm gearing modified with varying of transmission ratio
Xinshi Township