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
a.j.p.
alarm friction wheel
ancome
angle closer
antanos
ardass
berberis wilsoniae hemsl.et wils.
bistable semiconductor laser diode
broadcast(ing)
card chain tappet
castanopsis concolor rehd. et wils.
celebrater
cenis
central dislocation
charadriiform
cleaning hole cover
Clinocottus
cloth roll(er)
concentration of solution
corrugated canal gate
cranka
Crannell
da'wa
deceleration limit
determining set
dinarkon
diplazium splendeus ching
double precision arithmetic
end-on position
equity theory
europium(tri)chloride
exhaust pipe flange seal
Faïmbé
floor-walker
fluid sensor
four-courses
four-stroke cycle
frequency histogram
fresh water system
get a black eye
gillet
gotta lotta bottle
hardware description language
higher-productivity
hypertext markup language 4.0
hypohedonia
idle pattern
in full riot
increpate
infrared linescan system
initial inspection
interossseous groove
Ivanovskaya Oblast'
jinde
kennamer
landing craft
Langerhans' islands
length of swing
logical programme
low-conflict
manufacture bases
metallic tubular paper capacitor
Midaslike
minimum (slewing) radius
misbelieves
multiple beam radiation
multisigned
N-syndecan
Neo-Dibetic
neopros
Nordheim-Scalettar method
origin principle of turnover taxes
out of benefit
overindustrialising
partial fertilizer
picture box
pioli
Pirmaquinum
planned purchase and marketing by the state
Ponérihouen
port dosing
reticulans
rotary bagger
ruiners
semi-active landing gear
simplified computation method
skimming coat
stator bar insulation
stereoinduction
surface approximation
tee hinge
Tibeto-Burman languages
timodyne
uncomplicate
unfisting
us au pair
usphs
valengongite
veto vacuum unloading gear
walk ... off
warning-piece
wavebeam guide