聚合物水泥混凝土

By Gary Garriott Broadcast: September 8, 2003 This is Robert Covent with the VOA Special English Development Report. Bridges are an important part of transportation systems. They make it possible to t

发表于:2018-12-01 / 阅读(252) / 评论(0) 分类 VOA2003(下)-发展与科学

Researchers: Recycled Concrete's Time Has Come SOUTH BEND, INDIANA Recycling in the construction industry has become big business. It's easy to find new life for everything from old windows to wood beams. But until now, concrete the most widely used

发表于:2018-12-08 / 阅读(105) / 评论(0) 分类 VOA标准英语2016年(八月)

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(96) / 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(125) / 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(107) / 评论(0) 分类 Scientific American(一)月

Grammar Girl here. Todays topic is cement versus concrete. Guest writer Sal Glynn writes: Accuracy is important. You might think concrete and cement are interchangeable, but you'll quickly find that you're mistaken when some guy at Home Depot rolls h

发表于:2019-01-02 / 阅读(186) / 评论(0) 分类 英语语法 Grammar Girl

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(112) / 评论(0) 分类 60秒科学

By Ben Gilbert Baghdad 11 January 2006 An Iraqi mason works on a wall surrounding a new school on the outskirts of Basra (file picture) Iraq has been hit with a construction boom - in no small part du

发表于:2019-01-07 / 阅读(189) / 评论(0) 分类 2006年VOA标准英语(一月)

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(139) / 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(119) / 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(165) / 评论(0) 分类 Scientific American(四)月

This is the VOA Special English Agriculture Report. Rice hulls, or husks, are the protective coverings on grains of rice. Rice with just its hull removed is brown rice. Rice without its hull or bran is white rice. Once rice is harvested, the hulls ar

发表于:2019-01-11 / 阅读(193) / 评论(0) 分类 VOA慢速英语2009年(十二)月

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(78) / 评论(0) 分类 2016年VOA慢速英语(九)月

Volunteers Help Revive LA's Concrete River Thousands of volunteers turned out on a recent weekend to remove the trash that has been deposited by winter rain storms. The Los Angeles River was lined with concrete in the late 1930s and 1940s, after year

发表于:2019-01-14 / 阅读(111) / 评论(0) 分类 VOA标准英语2013年(五月)

'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(166) / 评论(0) 分类 VOA标准英语2016年(二月)

DEVELOPMENT REPORT - Long-Life Concrete Bridges By Jill Moss Broadcast: Monday, June 07, 2004 This is Robert Cohen with the VOA Special English Development Report. Each year, road accidents kill a mil

发表于:2019-01-16 / 阅读(131) / 评论(0) 分类 农业与发展

今天我们要学的词是concrete。 Concrete具体的,实质性的。美中战略与经济对话星期二结束。美联社报道说,The United States and China ended two days of high-level talks with few concrete results, 美中结束了为期两

发表于:2019-01-16 / 阅读(108) / 评论(0) 分类 英语每日一词

The bar owner was upset. His best customer was in the hospital. He had a head injury. What happened? the owners wife asked. He said, He drank too much. When he went outside, he fell down. His head hit the sidewalk. Now he's in the hospital. This isn'

发表于:2019-01-22 / 阅读(118) / 评论(0) 分类 英文短篇故事(纽约)

VOA's Weekly Science and Technology Magazine Art Chimes 05 January 2010 MUSIC: Our World theme This week on a special edition of Our World, some of our favorite stories of the past year ... including a high-tech wrinkle to that humblest of building m

发表于:2019-01-23 / 阅读(89) / 评论(0) 分类 VOA标准英语2010年(一月)

Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele

发表于:2019-02-08 / 阅读(191) / 评论(0) 分类 VOA标准英语2010年(一月)
学英语单词
a-high
acetylaminobutylaldehyde
acid peroxide
agrade
algae-laden water
aphanamixinin
auxiliary acessories
bringhouse
bunyip
car license tax
catlins
celida
circuitry of action
Cnemidophorus velox
co-crystallization
complex networks
compound symbols
conditional contracts
cost efficient
dactyoideus
diaminostilbene
digitary
directors of research
ducked-off
ectotunica
electrostatic emanator
equalizing busbar
farsight
ferric salt reducer
ferrocement
filling pumped storage reservoir
former winding
gamily
generalized sequential probability ratio tests
global beam horn antenna
Grid sitor
haptocyst
have interest in
high parapet
increment speed
Inidrase
interacting galaxy
interdenominationally
intrenches
isohemoagglutnin
laser fusion
masowyr
massud
Mellerud
mesne landlord
microneurovascular transplantation of ovary
mid term credit
mincus
mustardplaster
n-butyric acid
neckbeard
neomendelism
obloquy
orbit transfer vehicle
outbattled
parqueting
pattinsonize
perfect inelastic restitution
pore refining
preservest
primary current flow
proportional navigation course
protoplasmic process
pseudocercospora polliae
pump speed
purchase agreements
qandahars
Reachout
reading lesson
realizer
Reform ofmanagement of state-owned property
rising arch
s.i.b.
Salados
seegers
seismic spread
Sir Geoffrey Wilkinson
slip orientation
specific medical conditions
station code
stationary asphalt melting unit
T-588
tertium quids
textile production
thalassium
three-axis gyropilot
top dresser
Toyama-ken
tuberaceaes
Twysday
underfiring
uniform command language
universal apparatus
waryfish
washstand drain valve
wayde
yampah