氨基甲酸脂聚合物

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(52) / 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(77) / 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(60) / 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(78) / 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(64) / 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(107) / 评论(0) 分类 Scientific American(四)月
学英语单词
abrenine
Actonian
Androsace erecta
apandria
atelopera
Baring,Evelyn,lst Earl of Cromer
Bartletts Harb.
batter sb. about
beam bridge
binary representation
bureaus
butty gang
cheering squad
cofinally
colo(u)r laser display
common-battery telephone set
cookess
corycaeus (urocorycaeus) longistylis
cross river pipeline construction
cylinder oil service pump
cystophorous cercaria
daily price limit
data carrier (data medium)
davanone
decarbonatization
dice games
didynamous stamen
Dounoubel
dry-erase board
embassade
Emiliano Zapata
evaporation trails
exaflops
exterior stringer
extractibility
fan tzu y?eh
fancasts
feedback node
fuzzy interval
Gemminges
hartford ferns
haunt of thieves
HDLC
homosexual-rights
Huggins equation
Imferdex
immediate response mode
innovative idea
intra-striate
k - y jelly
kinorhynchs
kraft capacitor paper
lfas
limited standard vehicle
median valley
methylene ether bridge
microindels
morasses
mortar-boards
nocturnal jet
non-expired cost
Oberscheld
oxygen extractor
packaged goods lost at sea
pallial eye
paperless trading
parallel intake entry
parmars
peapon
permatemp
Pogson ratio
positive temperature coefficient
post-cranial skeleton
princehead
Pseudoarabidopsis
pterygoid branch
quinoxyl
regional economic structure
rest base
scatter loss
schoenhut
seedling stock
sheath of sting
sheet thickness calibrator
shrink(age) fit
sintering line
startlement
subohmic
thought outside the box
three-phase three-wire system
time base accuracy
tonic food
total capacity of spray tank
trichiorhyssemus hauseri
underglaze blue and underglaze red covered jar
untransformable
vacuum desiccation
Verdon River
wall firing
weight regulator
with a pop
xanthids