[化] 顺式构型聚合物

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(180) / 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(205) / 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(180) / 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(192) / 评论(0) 分类 60秒科学

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(248) / 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(189) / 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(242) / 评论(0) 分类 Scientific American(四)月

This is Morning Edition from NPR news. I am Steve Inskeep and I am Susan Stamberg. Russian and Chinese forces today begin 8 days of joint military exercises. Some ten thousand troops are expected to take part, making this their largest joint military

发表于:2019-01-08 / 阅读(254) / 评论(0) 分类 2005年NPR美国国家公共电台

By Robert Raffaele Washington 27 March 2008 A new type of surgery may make it easier for patients who would otherwise require a more invasive procedure. The new type of operation makes it possible for doctors to remove unwanted tissue through a patie

发表于:2019-01-09 / 阅读(211) / 评论(0) 分类 VOA标准英语2008年(三月)

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(151) / 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(273) / 评论(0) 分类 VOA标准英语2016年(二月)

As was the common practice with the gods of Olympus,Zeus and Hermes were visiting the world in disguise.One day they came to a village.At a thousand house sthey knocked,and a thousand times they were refused rest and food and drink.At last

发表于:2019-01-30 / 阅读(228) / 评论(0) 分类 阅读空间
学英语单词
accommodation address
acethemin
aeronautical engineerings
alcohol use
approach about
atomic particle
barking iron
basic dimethyl halogenated arsine
battle fleet
Beiderbecke, Bix
bigum-do (pigum-do)
bishemel
blocking chromes
butenal
case stained by dry water
centre note
Ceva
check before acceptance for conveyance
Chelyabinskaya
clouterly
colchium seed
compatibilized
contracted quantity
CPV
crocynia faurieana
definite time
degreasing fluid
Deutzia hypoglauca
dial hood
Direct lease
disclosure obligation
ditheistical
dranyens
dryer and separator shield plug
electron transfer reactions
emprime
endosperm nucleus
Eucalyptus globulus Lab.
froth stain
geotriid
groundnut kernels
grout consumption
honoris causa degree
in proper sequence
instanceable
interpreter used in producing error messages
irregularist
jasmine oil
la mer
learning aid
lyins
machinery control center
Market Surveillance
milli-tesla
miniaturized completion
mixing pattern
Monroe, Vaughn
mud volcanoes
multi-binomial test
murerwa
near absolute liquidity preference
oleum cadinum
over-load test
overhead traction wire
palaearctic sweet potato
peter pepper
physiofacies
pollen restoration
port's cargo throughput
privateers
Pudsey
q-drive
rebaptised
redbox
refund order
Rungu
salamanderin
sapna
selection-replacement approach
sheet microfilm
size of grain
solecism
specific internal energy
superwaves
supply cable
tax effort
the Great Vowel Shift
too-big-to-fail policy
tulip fingers
turnip sawfly
twine-tying mechanism
two port
unallowable code check
universal drill boom
unpleasing
upper cylinder bore wear
vanalium
Weigert's neuroglia fiber staining
whirlwind air separator
whiz
yellow citrus ant
Zlatograd