羧酸聚合物

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(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

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(185) / 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

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)
学英语单词
1-butylene
affinine
after-tax
agrometeorological station
all weather approach
ariyama
atmosphere corrosion
bifas
bigsby
Bokolongo
bonding (molecular)orbital
cabulla fibre
cement plomb
cerutti
circulans
close-coupling approximation
Cold light of day
colored egg
computer game
containing boron
diluent air
dispersalist
dotrels
duskening
electron spin resonance spectroscopy
export and import structures
facing gauge
feeling of asphyxia
feitknechtite
file indirect
forfaiting
fractionating crystallization
fractographic
hand -hydraulic steering gear
horizontal press
Huejutla
hydrocuprite
importunities
index of ramification
interventricular valve
joit
Jünkerath
Kruskal coordinates
late development of accounting
lay weight on
Leichtenstern's sign
lower tooth
lustfull
Lynx caracal
mage
marlton
maskers
megacell
mini-brewery
Muscovy Company
mustio
non supportive
non-poisonous
offshore support vessel
oval section volute spring
Pak Kret
passive infrared homing head
periarterial plexus
petroleum lubricating grease
phoebastria nigripes
Pichia farinosa
polysilicates
praepupa
radiation source implant
reinforced plastics
reoccupation
Salix tetrasperma
Salvia sinica
samarias
screw expeller
setschwanensis
setting to
SGEMP
signal of giving way
skal
slag-drip opening
Slater constraint qualification
smackdowns
smoke density test
soil humidity
spacecraft subsystem
St-Joachim
take care tonight
taker-in stripping rail
topliners
traction method
trans-test
transient response analysis
un-
uncauterized
unceded
undisclosed reserve
united nations educational scientific and cultural organizations
urubus
vereins
watchment
zinc oxide thickening value