阳极调谐放大

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(189) / 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(207) / 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(204) / 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(266) / 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(218) / 评论(0) 分类 TED演讲科学篇

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(277) / 评论(0) 分类 Scientific American(四)月

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(214) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion

发表于:2019-01-08 / 阅读(250) / 评论(0) 分类 Scientific American(九)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(219) / 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(270) / 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(238) / 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(183) / 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(180) / 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(313) / 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(244) / 评论(0) 分类 VOA常速英语2007年(十一月)

Move over Tiger Mother - there's a new cat on the block. 虎妈靠边儿,育儿领域来了猫爸。 Perhaps you're familiar with the super-strict mum who pushes her kids to be the best at school, sport, and music - no matter what the cost. It's a

发表于:2019-02-06 / 阅读(231) / 评论(0) 分类 阅读空间

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(284) / 评论(0) 分类 2018年科学美国人10月

Music to hear, why hear'st thou music sadly? 你就是音乐却为何听着音乐伤情? Sweets with sweets war not, joy delights in joy. 美妙和美妙不为敌,乐与乐总同根。 Why lov'st thou that which thou receiv'st not gladly, 为什么

发表于:2019-02-16 / 阅读(276) / 评论(0) 分类 莎士比亚十四行诗全集

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(242) / 评论(0) 分类 双语有声阅读

克里斯汀一起床就片刻不离地守着安娜,对她说话,给她唱歌,为她祈祷,也为她哭泣。圣诞前夜到了,克里斯汀用小灯和一棵迷你圣诞树装饰安娜的病房。她打开收音机,调到一个正在播放圣诞颂歌

发表于:2019-03-02 / 阅读(215) / 评论(0) 分类 英语美文
学英语单词
Actacode
actinic-green glass
actual transformation ratio of voltage transformer
aethusin
affogato
agreement for
American storax
anchoretism
argentine accordion
arrearage
aubrietia deltoldea dc.
bast soap
bulk-buyings
buzzing off
Callaway's proof
co-funded
coal-fish
coefficient D
connected lender liability
correlation name
dehn
disloyalness
effective lifetime
engineering structures
environmental management and operations
executable section
F-F (form feed)
fat lobule
feel me up
ferrocenes
fk4 catalog
flat-ended horizontal cylindrical drum
freshwater deposit
garment piece
genus cardueliss
glamorousness
hand-arbour press
hemp-fibred plaster
hiking boots
hyperlocalized
hyperphysemia
hyrated shell
independent triangulation net
instruction key
inventory control problem
isosmotic solution
lame under the hat
laminated flow
laundromat
line of influence
Loose Screw
mammalial
mats
michael jacksons
mid section
minimal true vector
motorsports
neoconservativisms
odd prime
penny crack
pgimer
philosophy of nature
pilular
place out of service
portal lobule
postfilter
primary autopilot
project control
quaker moth
range of working temperature
recongregated
redshifting
rocker bottom
safekeeping life
sagittally
self-consistency
semicustomized
small scale topographical map
SPACEWAR
srirangapatnam
subcarrier phase comparator
subshifts
suffer heatstock
sun-dry
Tanbingon
temperature alarm indicator
Terra-systam
the chequered flag
the symbolic
tomescu
transforming matrix
tube welding
turnkey operation
Turnu Severin
uncommongoods.com
undeafed
universal implication graph
ureteral tumor
vachel lindsays
vagring
weathering crust
yellow caution zone