二甲基硅氧烷聚合物

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(54) / 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(81) / 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(62) / 评论(0) 分类 Scientific American(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(79) / 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(65) / 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(108) / 评论(0) 分类 Scientific American(四)月
学英语单词
a man of his hands
A.G.V.
acid snow
age-dependent branching process
Alaka
allocation problem
backward counting
Barwala
benefit year
Betula platyphylla
bourland
box spinning machine
branch traverse
carbazic acid
catcht
CEQ Council on Environmental Quality
charge for overtime
China fir
chloride of silver cell
Comilla
complete matrix algebra
computer network exploitation
concept field
continuous broaching machines
corn roller
curve matching
dead short
degrees brix
demagnetizing resistance
Depot Harb.
diatri
diesel engine fuel
document with
double-loop pattern
earache
electron-beam accelerator
Emeticon
engine tester
experimental resorption effect
field ammoniation
five-flap plasty
flit-plug
fore head spring
functional acknowledgement
give sb the brush off
glass (liquid) level ga(u)ge
goods were damaged in transit
hamadryas
hangin' out
hard-sectored format
headpiece of lace
internal cost
ion detector
laicised
lamellipodias
laughingly
literal interpretation
man portable
melampsora laricis hartig
melange suiting
multi-channel photo-recorder
newcut
nicotine-resistant
nonionised
nonpresentational
nontactile
object-oriented
OMGPOP
Oria, R.
palisade parenchyma
Paragglutiongen
perplexer
petrogeny
pholiota aurivella
Pine Grove Mills
post-coordinate index
presbyopic glass block
print manager
pull out power
ramus internus (n. accessorii)
Rio Negro, Pantanal do
rozo
scuffing mark
seed number
shallow hardening
silver anniversaries
sleepness
staffwork
stoppet
streamiline body
sweet champagne
tapped-tuned circuit
three-halfpenny
threw in
timber-preservation plant
tractatule
unequal interval
velocity seismograph
volume mole
Xiao Qinglong Tang
yearny