低介电损耗高聚物

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

发表于:2018-12-24 / 阅读(136) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because

发表于:2018-12-24 / 阅读(165) / 评论(0) 分类 Scientific American(三)月

Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c

发表于:2018-12-24 / 阅读(141) / 评论(0) 分类 Scientific American(一)月

Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s

发表于:2019-01-02 / 阅读(148) / 评论(0) 分类 60秒科学

TORONTO, Dec. 13 (Xinhua) -- The Toronto Raptors' bench scored a season-low seven points in a 107-96 loss to the Milwaukee Bucks in NBA action on Sunday afternoon. Coming into the game, the Toronto reserves were ranked eighth in the league, averaging

发表于:2019-01-07 / 阅读(164) / 评论(0) 分类 英语新闻

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

发表于:2019-01-08 / 阅读(186) / 评论(0) 分类 Scientific American(九)月

Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don

发表于:2019-01-08 / 阅读(154) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

发表于:2019-01-08 / 阅读(206) / 评论(0) 分类 Scientific American(四)月

By Kari Barber Dakar 26 September 2007 Two reports released by governance watchdogs name West and Central African countries as some of the most corrupt and poorly governed in the world. Kari Barber reports from VOA's West and Central Africa bureau in

发表于:2019-01-10 / 阅读(156) / 评论(0) 分类 2007年VOA标准英语(九月)

By Challiss McDonough Cairo 08 April 2008 Turnout has been very light in Egypt's local council elections as the main opposition group urged its followers to boycott the election when its candidates were disqualified. VOA Correspondent Challiss McDono

发表于:2019-01-10 / 阅读(127) / 评论(0) 分类 VOA常速英语2008年(四月)

By Cathy Majtenyi Nairobi 19 May 2008 Fuel efficient stoves and ceramic water purifiers are two examples of low-tech innovations that can help people in poor countries improve their quality of life. Because what is known as appropriate technology usu

发表于:2019-01-10 / 阅读(157) / 评论(0) 分类 VOA标准英语2008年(五月)

All Time Low The Wanted Praying won't do it Hating won't do it Drinking won't do it Fighting won't knock you out Of my head Hiding won't hide it Smiling won't hide it Like I ain't tried it Everyone's tried it now And failed somehow So when you gonna

发表于:2019-01-10 / 阅读(144) / 评论(0) 分类 好听的英文歌曲

Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o

发表于:2019-01-12 / 阅读(113) / 评论(0) 分类 2016年VOA慢速英语(九)月

'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded

发表于:2019-01-14 / 阅读(213) / 评论(0) 分类 VOA标准英语2016年(二月)

AILSA CHANG, HOST: You may have heard in recent years that minor league baseball players don't exactly share in the riches of the game. Most minor leaguers make an estimated $7,500 per year. Major League players average more than four million. A law

发表于:2019-01-17 / 阅读(232) / 评论(0) 分类 2018年NPR美国国家公共电台8月

今天我们还是继续讲在大选年中时常用到的习惯用语。多数参选的侯选人在选战刚拉开序幕时常常会作承诺。例如,他们会信誓旦旦地保证绝不向竞争对手进行人身攻击,也决不信口诋毁对手

发表于:2019-02-12 / 阅读(194) / 评论(0) 分类 美国习惯用语

冠军单曲 围观帅哥:The Wanted - All Time Low The Wanted,英国新晋男子偶像组合为什么又是男子组合呢?还打偶像的招牌,看照片上果然是五只大帅哥,其中年龄最大的21岁,最小的17岁歌么,不错,

发表于:2019-02-17 / 阅读(149) / 评论(0) 分类 流行英文歌曲

How Low [Hook] How low can you go? [8x] [Ludacris] Luda! She could go lower than i ever really thought she could, Face down, ass up! The top of your booty jiggling out your jeans, Baby pull your pants up, I like it when i see you do it, Better then i

发表于:2019-02-18 / 阅读(188) / 评论(0) 分类 好听的英文歌曲

WASHINGTON, Nov. 14 (Xinhua) -- Nearly a fifth of all Americans 12 years or older have hearing loss so severe that it may make communication difficult, according to a new study led by Johns Hopkins University researchers and published Monday in the A

发表于:2019-02-18 / 阅读(148) / 评论(0) 分类 英语新闻

Low [Chorus:] Shawty had them Apple Bottom Jeans [Jeans] Boots with the fur [With the fur] The whole club was lookin at her She hit the flo [She hit the flo] Next thing you know Shawty got low low low low low low low low Them baggy sweat pants And th

发表于:2019-02-18 / 阅读(162) / 评论(0) 分类 好听的英文歌曲
学英语单词
acinic cell tumor
additive effect
adequate solution
algoparesis
ananyms
anterior cervical triangle
antidimming dise
arch bar
auramine, auramin
barbadosnut
blue-screen
Boveri, Theodor
Budenheim
business liability
carmen (el carmen)
collimating marks
complete neighbo(u)rhood system
composite capital
Creutzfeldt-Jacob disease
cross over to the other side
crown control
cyclical balanced budget
d'este
data interrogation language
dead-tired
DIALOG Information Service
dismissal statement
distraction-conflict model
duckin'
dulcinea
early frost hidden
ElErian
expand mandrel
fixed oil radical
foreign flavour
half vat
hemstitchings
hide one's light under a bushel
homemade computer
honeytrap
hydrogenated products
in situ curing
informative advertising
initial sensitivity
intra-observer reliability
Josephson
keep the land aboard
leminoprazole
liquid manure drill
make a pig of yourself
matrimonial rites
means of proof
mesocoracoid
middle ear effusion
military-intelligence
misdrawings
most famous of saddle horses
mulain
mushrooming of dislocations
NEP (new equipment practice)
non navigable river
Nord-Norge
Nyda
phased increase
piping hot
pointrels
process costing
programming language revision
purnick
quasi tort
redintegrative
regulations regarding the recruitment of workers
row sb. up Salt River
sarcoma of vagina
security/sensitivity
sight rule
single stage converter
slobber-chops
smurf attacks
spun-barrel reflector
strings along
tangential grinding force
Teddy Bears' Picnic
telechemic
telosemicollinite
tesler
tesselite (apophyllite)
tetra-acylated
tin-based alloy
tone arm for record player
trichopterous insects
trout cod
trypsinlike enzyme
turd cutter
undelete command
variable rate sampling
vector-electrocardiograph
viscountial
Waitahuna
yarmouth interglacial period
zealants