[电] 双重放大

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(122) / 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(128) / 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(145) / 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(180) / 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(146) / 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(141) / 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(143) / 评论(0) 分类 Scientific American(三)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(188) / 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(162) / 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(109) / 评论(0) 分类 VOA标准英语2012年(一月)

Liberian Diaspora Debates Reconstruction, Dual Citizenship Former Liberian foreign minister Olubanke King-Akerele, in a keynote speech, proposed a public-private sector partnership whereby Liberians abroad can set up businesses at home. But, she said

发表于:2019-01-13 / 阅读(185) / 评论(0) 分类 VOA标准英语2012年(七月)

Dual Tree Lighting Illuminates Annual Holiday Debate It's the Christmas holiday season in the United States, and with it comes an annual argument: Should local, state and federal governments put up Christmas trees, or even call attention to Christmas

发表于:2019-01-13 / 阅读(143) / 评论(0) 分类 VOA标准英语2011年(十二月)

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(122) / 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(185) / 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(163) / 评论(0) 分类 VOA常速英语2007年(十一月)

Tuberculosis infects nearly ten million people each year and kills nearly two million. It is primarily a lung disease that spreads easily among people with weakened immune systems. Sub-Saharan Africa is still the epicenter of the HIV/AIDS disaster, b

发表于:2019-02-04 / 阅读(128) / 评论(0) 分类 VOA标准英语2010年(七)月

今天我们要学的词是dual。Dual 双重的。A number of Taiwan residents who hold dual citizenships have chosen to renounce their American citizenship to avoid paying taxes under the Foreign Account Tax Compliance Act. 一些拥有双重国籍的

发表于:2019-02-05 / 阅读(141) / 评论(0) 分类 英语单词荟萃

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(187) / 评论(0) 分类 2018年科学美国人10月

今天我们要学的词是 dual citizenship. Dual citizenship 双重国籍。Australia's Deputy Prime Minister Barnaby Joyce was removed from office because of his dual citizenship. 澳大利亚副总理乔伊斯因为双重国籍被免除职务。T

发表于:2019-02-16 / 阅读(139) / 评论(0) 分类 英语单词荟萃

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(157) / 评论(0) 分类 双语有声阅读
学英语单词
adias
advenced graphics port
agricultural performance
air change rate
annual minimum relative humidity
antiophthalmic factor
autopallet swinger
bass-relief
black bags
bra chains
case-bound
changes in organization
clapper-board
Cornu's spiral
cyanacetic acid
cycles
cyclopean stairs
debonaires
Demalon
deraya (ad diriyah)
Deutzianthus tonkinensis
economic lifeline of the country
educational affair
electronic distance meter
embroiling
emergency preparedness
encroach on standars of pollution control
ensisternal
envelope level of sync peak for modulated vision signal
ever-flowing
examination of color sense
fits and startss
flight director
fraction separation efficiency
Give a Dog a Bone
ground bearing pressure
Götaland
half-broken
helobial type
high - heeled shoes
hubrichti
Ibefun
imitation homespun
inbeamings
inducted mixture
inverse signal feedback
Japanese ardisia
kulaite
laser-spot tracker
leper lilies
Lyellia
macrosphaerus
mandelic acid isoamyl ester
maraschino cherry
marbel
marken
medamine
multivibrator modulator
mycena vulgaris
nitai
Nu (Nusselt number)
offender psychology
ophiuran
osteoglossums
overload interlock x-ray unit
piggyback twistor memory
pipturus argenteuss
pocket call
poor position
prelocalizing subcategory
primary halo
profanation
radiation pattern antenna
radio-photo
RAP30
red-water fever
rental value of forest of normal working section
Resolution.
reverberation strength
routine check
rrotta
self-scanned linear array
septor
shipyard conjunctivitis
smoggily
sphere trough pair
stion
supergeeks
survey party
sweep velocity
temperature indicating and recording controller
terrain avoidance
Tes-Tape
tine plough
tinyness
toxic air pollutant
unmiters
vein of cochlear aqueduct
well above
yeadons
zero-phase