非稳压整流器

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Rivers today have high muddy banks, sandbars and bends. But they didnt always look that way because it wasnt until the evolution of tree-like plants, some 330 mi

发表于:2018-12-24 / 阅读(82) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science, I'm Christie Nicholson. Got a minute? During the last ice age our problem was too little carbon. Unlike today where too much carbon is causing global warming. Past glacial ages occurred partly because

发表于:2019-01-08 / 阅读(84) / 评论(0) 分类 Scientific American(七)月

The Senate has confirmed the nomination of Sonia Sotomayor to the US Supreme Court. NPR's Audie Cornish reports. Minnesota Senator Al Franken read the tallies at the end of the confirmation vote. On this vote, the yeas are 68 and the nays are 31. Th

发表于:2019-01-08 / 阅读(64) / 评论(0) 分类 2009年NPR美国国家公共电台8月

BEIJING, Oct. 10 (Xinhuanet) -- Actress Zsa Zsa Gabor was rushed again to the hospital in Los Angeles to reattach a feeding tube to her stomach Sunday, her publicist said. The 94-year-old actress was taken from her home to UCLA Ronald Reagan Medical

发表于:2019-01-17 / 阅读(76) / 评论(0) 分类 英语新闻

So, what I see is the makings of a very healthy company with some extraordinarily talented people who are still just as passionate and committed to the dream of computing as they ever were. They need to come together and get a great plan and then sta

发表于:2019-01-18 / 阅读(78) / 评论(0) 分类 财富精英励志演讲

And I was shocked and shaken to the core. 我震惊不已, 吓得不得了。 And I went through this roller coaster, because after they stabilized her, she went to the intensive care unit, and I hoped against hope that she would recover. 之后我的

发表于:2019-01-18 / 阅读(52) / 评论(0) 分类 TED演讲教育篇

HARI SREENIVASAN: A newly released report by the Southern Education Foundation says a majority of all public school students across the United States come from low-income families. Experts say that could have important implications for the nation. Fo

发表于:2019-01-27 / 阅读(52) / 评论(0) 分类 PBS访谈教育系列

拉丁美洲仍是最不平等,最不安全的地区 UNITED NATIONS, Nov. 12 (Xinhua) -- Latin America remained the most unequal and most insecure region in the world, said a UN report released Tuesday, calling for efforts to reduce insecurity thro

发表于:2019-01-31 / 阅读(51) / 评论(0) 分类 英语新闻

President Barack Obama says congressional leaders from both political parties need to do the right thing and work with him to achieve the largest possible compromise to cut deficit spending and raise the national debt limit. Mr. Obama used a news con

发表于:2019-01-31 / 阅读(77) / 评论(0) 分类 英语新闻

U.S. officials say cooler weather and recent rain showers in the drought-stricken Midwest have largely stabilized crop conditions, but add that the drought is not over. The U.S. Agriculture Department said in a statement Tuesday that rainfall has bee

发表于:2019-02-03 / 阅读(52) / 评论(0) 分类 英语新闻

BEIJING, April 13 (Xinhua) -- China's economy expanded 8.1 percent year-on-year in the first quarter of 2012, slowing from 8.9 percent in the fourth quarter of last year, the National Bureau of Statistics (NBS) said Friday. The figure, which marked t

发表于:2019-02-05 / 阅读(62) / 评论(0) 分类 英语新闻

Despite inheriting what he called a mess President Barack Obama pledged to do everything in his power to fix the broken U.S. economy. Based on key indicators, the president appears to have succeeded in stabilizing the worst financial crisis since the

发表于:2019-02-06 / 阅读(52) / 评论(0) 分类 VOA标准英语2010年(一月)

A.J.雅各布斯用了整整一年的时间,遵循他听到的每一条健康建议--从用玻璃杯来抹防晒霜到戴着自行车头盔购物。在TEDMED的演讲台上,雅各布斯与大家分享了他在这个过程中发现的许多让人意

发表于:2019-02-06 / 阅读(104) / 评论(0) 分类 名人演讲视频

Oh, to be free like a bird. It's been the stuff of fantacy, and of reality. Sort of .A self-contained flying man. This jet pack from 1960s had barely enough fuel to fly 30 seconds. So the dream languished for decades. Everyone agreed it was completel

发表于:2019-02-07 / 阅读(223) / 评论(0) 分类 英语美文

Italy's Senate rushed to pass laws that clear the way for establishing a new government in a bid to restore confidence in Europes second-biggest debtor. The new administration may be led by former EU Competition Commissioner Mario Monti, - a man mark

发表于:2019-02-08 / 阅读(72) / 评论(0) 分类 英语新闻

WASHINGTON, Oct. 19 (Xinhua) -- Thanks to a massive(巨大的) and sustained(持久的) policy response, the U.S. economy has continued to recover from the worst recession(衰退,不景气) since the Great Depression, but the recovery rem

发表于:2019-02-11 / 阅读(47) / 评论(0) 分类 英语新闻

The central parity rate of the Chinese currency strengthened 175 basis points on Tuesday, closing at 6.32 to the U.S. dollar. The yuan has stabilized somewhat after a sharp depreciation in August, but remains down 1.8 percent compared to the start of

发表于:2019-02-18 / 阅读(116) / 评论(0) 分类 英语新闻

A number of economists are suggesting inflation here in China may be back under 2-percent. ICBC chief economist Lu Zhengwei is forecasting CPI for January will be at 1.8-percent. This would be down from the 2.5-percent figure in December. In December

发表于:2019-02-21 / 阅读(97) / 评论(0) 分类 英闻天下

President Barack Obama says there is no doubt that the European Unions agreement to slash Greeces debt and enlarge a bailout fund is progress. The president says strong execution of the plan is essential. After meeting Thursday with the Czech Republi

发表于:2019-02-25 / 阅读(105) / 评论(0) 分类 英语新闻

托福阅读高分的关键是在于多看多练,同学们在日常练习中应该重视托福阅读材料的分析。新东方网为大家整理提供托福阅读练习,供各位考生复习参考。 Although only 1 person in 20 in the Colonial

发表于:2019-02-26 / 阅读(45) / 评论(0) 分类 托福英语
学英语单词
Adam De La Halle
aeronautical engineerings
aftertime
akwapims
audiocassette
base coordinate
bezzler
boyly
capsular glaucoma
carbonemia
Chasles' theorem
churning losses
clover leaf beetle
coldcomfort
communication operating system
convention centres
cos.
cpsa
cryptographically
cutting tray
draw the curtain on sth
drop shadows
dry distiller
drying tube
ebullioscopic constant
enhancement mode field effect transistor
Eumycotina
experimenting
fawns on
fibre-forming material
Floating Oil on Water Surface
fractional-order
frequency analysis and control
Gaussian doublet
gear shifts
geometric object
glycobiologist
grinding down
gutierrez
half an timber hitch
home-centered
horse mouth rasp
inertia lock
ischemic necrosis of leg
Kachugskiy Rayon
kalialaskite
khalqs
Kingsdown
line development
liquid-like
macchiatos
magnesium ore
main air compressor
mccuen
mercury cathode
mesia
minimax equality
monoclonal-antibody
multipacket message
mumy
napping
nawrath
nodars
obg
pet sitting
pilger process
pintsize
Plectrophenax
prevalence
prior notice required
prosopon
protein deficiency
Ptyalon
roller game
Sarleinsbach
sequential binomial sampling
set someone upon his legs
sheathed deck vessel
Shādihar
single tool holder
small-seeded
spiral spur gear
spring type point lever
stable state oscillation
Sterrebeek
straight side transfer press
supplemental crop
technological innovations
Thalictrum scabrifolium
translation bridging
Tweed Ring
understratums
vault-cash
volt-ampere reactive
walcheren i.
warble-tone audiometer
wealth-holding
white-stemmed filaree
whole binding
window sash
wotting
x-cell