塑聚合物

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(303) / 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(357) / 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(283) / 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(326) / 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(417) / 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(310) / 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(407) / 评论(0) 分类 Scientific American(四)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(287) / 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(419) / 评论(0) 分类 VOA标准英语2016年(二月)
学英语单词
agricultural output
araguato
as it may
axial stress
befingered
boteh
bricksetter
cause-effect law
certification of product
Chi Linh
chive
cloth polishing
cochlear receptor
Coyne
criminal identification
deflecting plate
dges
Edessa
eldresses
entropion musculare
ethoxyphenyl
fictionize
Gallirallus
gossomer
group of letter
guadalupes
high-borne
horring
incrementation parameter
intermediate bearing
IWTO
journal start-up directive
lean out
level bubble
link
livefood
low concentration ratio system
lutescens
magnetorotation
major illness
maritime ports convention
melodramatizing
metal graphite material
moment conditions
Mono, Pta.del
nasoseptal ulcer
neutron from deuteron stripping
neutron sink
nonrivalrous
obsignated
optical brightener
outdevice
parastriatal
pay increases
penchihu cervies
Perdilatal
Podersdorf am See
power linkage
pregnant
prenoting
Primula esquirolii
probability as chance
propinqua
prototype gradation
provocation act
put sb through to
radishlike
random fixation(wright 1931)of gene
reawoke
recind
recit.
remote entry network
reprivatizations
rezhikite
rib-eye steak
ripel
safety buoy
secondary safety valve(for inner container)
semiconducting glass
single-tooth ripper
smyth sewing
spectroscopic technology
sportsfields
spun pipe
stop the show
stuccature
superimposed circuit
syll.
symbolic debugging
sympatexes
telepayments
three-plate clutch
to admit to doing
transpirational
turning scraps
two-resonator klystron amplifier
useablenesses
vehicle safety
vertical cylindrical boiler
vigilancy
X-radiate
zinc subcarbonate