= cationic polymer

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
accelerated weathering
accumulated interest
age life depreciation method
alternaria crassa
analytical function
anglo-irish
apophthegmatically
backfire effect
balance order
band of tolerance
beam ceiling
byrunning
cancel a tenancy
Cartesian devils
coquito
corneal border
devivo
diarying
difference curve
digital formula
direct allocation method
discrete sample analyser
Duyin (Ex9)
electrolyte shift
emotional appeals
empathic understanding
endfire array
esoterize
family Triopidae
fertiloscopy
foursquare
foursquarely
functional node
Gem State
general confession
glycoarrays
go to mess
grape-fruit seed oil
hydrogen cyanides
impostors
income tax collected at source
infrahyoid branch
integrated processes
inverse square attenuation of light
inward-
isothermobrose
knights templars
larrikins
lefkandi
littoral fever
local batch processing
material fertile
mazumder
mean ascending current
mesodmitis
micro hardness tester
midichlorian
MIG, Mig
monostable element
multiple detector system
no-flow position
occupational proficiency
oleic
osteoinductive
oxide etch
partial automatic checking
peak-point current
percent ratio error
pinpoint gate
play the card
point of recalescence
polygonus
pustulations
rain-factor
reaching out to
recles
residual drying
ribbiting
ring introducer
roll smoothing
run roughshod
safari ants
sdus
ship classed in VV
Sillaro, Torrente
Spatholobus discolor
static linking
Stephensian
sticking out for
sulfocompound
suspensive
sweet precipitate
sycophant
Thevenin
till death us do part
triangular hebesphenorotunda
underrotated
undisturbed flow
undressd finish
Vigilius
WBD
XOFF