[电] 推挽放大

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(85) / 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

Identity Thieves’ New Ploy: Pharming 2 How do people pharm? Pharming scams take a few different forms: Attackers could use malicious code, such as a virus, planted on a user’s PC to track keystrok

发表于:2018-12-19 / 阅读(180) / 评论(0) 分类 彭蒙惠英语

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(80) / 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(83) / 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(97) / 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(83) / 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(100) / 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(138) / 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(97) / 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(71) / 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(78) / 评论(0) 分类 TED演讲国际问题篇

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2019-01-20 / 阅读(95) / 评论(0) 分类 英语单词荟萃

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(124) / 评论(0) 分类 英语语言学习

Grammar Girl here. Today's topic is hyphens. On Monday afternoon Pat was watching the cable channel CNBC and called me over to the TV because the hosts were talking about hyphens. Yup, in the middle of a segment on the economy, they started talking a

发表于:2019-01-30 / 阅读(176) / 评论(0) 分类 英语语法 Grammar Girl

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(115) / 评论(0) 分类 VOA常速英语2007年(十一月)

Ganso could be out until 2013, says physio RIO DE JANEIRO, Sept. 28 (Xinhua) -- Brazil midfielder Paulo Henrique Ganso could be forced to wait until next year to make his debut for new club Sao Paulo. Ganso, who joined the Brazilian top division outf

发表于:2019-02-06 / 阅读(151) / 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(87) / 评论(0) 分类 2018年科学美国人10月

我们上次学的习惯用语都有push也就是推这个词,而我们今天要讲的习惯用语却都有一个动作相反的词pull, 也就是拉。我们先要学两个习惯用语,它们分别是:pull for. Pull for是打气、鼓劲,或

发表于:2019-02-18 / 阅读(149) / 评论(0) 分类 美国习惯用语

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(106) / 评论(0) 分类 双语有声阅读
学英语单词
aeriscope
arnimite
ascidiaceans
aster leiophyllus franch.et.sav.
auditory hair
be on sale
beam array
black gown
boat rising
cardinal adjective
cerodontha (icteromyza) piliseta
certified intrinsically safe electrical system
circumpolar current
Cisco Kid
comfect
cosmological redshift
cost plus percentage fee contract
cuban monetary units
data purging
daver
debitterizing
diethyl diphenyl urea
dimthyn
displaced worker
dojinshi
dynamically scoped
etiroxate
eyes like a ferret
fareworthy
fast number theoretic transform
Filabres, Sa.de los
future estate
Gauss' sign
geometric cross-section
Gergesa
giant granadillas
in-bond
interfacial oscillation
ladey
lemonparty
level cross country
loss of information (walk-down)
lymphomatoid granulomatosis
make it a point to
makesi
megachile spissula
melilotoside
microdevices
mid air
monogatari (japan)
mouthwatering
murallas
non-caucasian
nonthienopyridines
normal age-class
not available
nutmeg tree
on someone's own admission
optic iridectomy
parasite disease of mediastinum
payout period determination
perenson
plain cut out
postdeposition
preliminary prospectus
premium savings bond
pressure regulating screw
prime quantity
rectors
remethylate
reserve for renewals and replacements
retrotrapezoid
rig for rotary drilling with a continuous flight auger
sales price index
sandras
scientized
scouring tank
sgd.
shroff account number
shut off switch
silk inspection and testing
skypark
soa-integrated dfb laser
spade lugs
start-up pressure
stool examination
supplemental education
survivable accident
switch combination
Synthanal
Tarvisio
time integrating optical processor
tulkarem
undemure
under voltage timer
uneven rolling
unresolved echo
varvel
waste time doing sth
Wichita Mountains
wikstroemia effusa rehd.
zootomic