功率[能量]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(114) / 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(112) / 评论(0) 分类 2013年VOA慢速英语(二)月

Finding the Energy by Richard Seven 2005 The Seattle Times , Knight Ridder Newspapers. Distributed by Tribune Media Services Need some energy? To get it you have to spend it, and there’s the rub 1 W

发表于:2018-12-19 / 阅读(115) / 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(131) / 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(141) / 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(132) / 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(121) / 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(129) / 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(172) / 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(141) / 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(101) / 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(108) / 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(156) / 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(145) / 评论(0) 分类 VOA常速英语2007年(十一月)

SAN FRANCISCO, Nov. 15 (Xinhua) -- Google announced on Thursday that it is investing 75 million U.S. dollars in a wind farm in the Midwestern U.S. state of Iowa, making its total investment in clean energy projects to nearly 1 billion dollars. The Io

发表于:2019-02-08 / 阅读(109) / 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(156) / 评论(0) 分类 2018年科学美国人10月

SANYA, Hainan, Dec. 4 (Xinhua) -- The five BRICS nations intend to focus and work together on developing alternative energy sources. When Bu Xiaolin, vice governor of China's coal-rich Inner Mongolia autonomous region, spoke over the weekend in front

发表于:2019-02-17 / 阅读(135) / 评论(0) 分类 英语新闻

? Turning off your car's air conditioner - Yes, the AC does affect fuel efficiency. But Consumer Reports figures it amounts to only one mile per gallon, and edmunds.com says you could end up burning more if you open the windows and increase air resis

发表于:2019-02-17 / 阅读(134) / 评论(0) 分类 阅读空间

Energy Boy, I'm digging on your energy (Energy) and I'm digging what you telling me (Telling me) so I wrote this little melody 所以我写下了这首曲子 dedicated to my favorite lover 献给我最爱的人 Boy, I'm digging on your energy (Energy

发表于:2019-02-18 / 阅读(116) / 评论(0) 分类 好听的英文歌曲

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(142) / 评论(0) 分类 双语有声阅读
学英语单词
-'re
alluvial dredging
altima
ANTIPROPULSIVES
atypical tarantula
banderilleroes
Behcet syndrome disease
Bethenod-Latour alternator
big bag of pages
Boolean complementation
branch thorn
built up spar
by path principle
catenuliform
chimney-sweeps' carcinoma
chocolate agar
clammy bread
coal passer
consortium creditor
contaminated-oil basin
cup wheel type potato planter
cyclotoma indiana
days after contract
debtees
dermatology of traditional Chinese medicine
desperate straits
Devic's disease
direct evidences
feed reverse lever
fill someone's bonnet
finger disc
flat-plate valve
gain the wind of
gear-shifts
glendowers
go nap on sth
goal node
have the corner on
heavy-liquid bubble chamber
hooky-playing
horizontal pulse
hydrotropic substance
in-audibility
interlocutrice
isotropic expansion efficiency
it gets dark
kruesis
lamina thickness of prepreg
macroinfaunal
marine weather forecast
market bull
mergens
misquotation
mission planning
multiparty telephone
musees
naked seeded
narrow loom
nidulated
noise simulation
octubre
offences of interference with public functions
on-pack
one's sun is rising
optical cdma
Oriental lacquer
outgassing index
palis
plan of wage fund
porcelanous
poundcake
precision analysis
radium bromide
rami communicantes cum nervo hypoglosso
rancidities
reencounter
retrospective search system
ride to
rigid wheelbase
scrape ... feet
scurfskin
seal brown
self-contained STD profiling system
serratus anterior
shown forth
small scale air separation plant
tammerforss
tapot spout ladle
telacoustic
tern
three-phase induction
tip-of-the-tongue(TOT)
titanosilicate
Treolmicina
under-secretary-generals
US/LS
value of total costs
Villar del Humo
visual call sign
weddins
whorlywort
workstation number