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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(53) / 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(79) / 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(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(108) / 评论(0) 分类 Scientific American(四)月
学英语单词
AcycloGTP
adrenal body (or adrenal gland)
Amitostigma yuanum
anopisthographic
balztanz (austria)
be on one's mind
bien-pensants
blocked account
bollwage
bread crust structure
bridge crane with shuttle girder
chlorinated polypropylene
cholesteryls
civil helicopter
civilian
closed-caption
coal oven gas
combined cutting and-welding blow-pipe
conductoress
Conwell-Weisskopf equation
cork oak
Cueza, R.
cytofilament
danahers
delegation of authority commensurate with responsibility
dense deposit disease
deoxysugars
depaved
difference amplifier
differential arc lamp
drawing nail
duplex querela
earth-atmosphere system
ester additive
fluidized bed pelletizer
formalisable
Fresnel mirror
fuel injection pump driving spindle
genus Comatula
getting older
haude
henry fieldings
high-energy-rate forging
hosing
ignoraunce
induction period in gum formation
industrial and mining locomotive
inertial navigation/attack system
intailment
Kagiano L.
kitahara's water sampler
laser ground mapper
Leiter's coil
litho-rheotactic
locked-coil conductor
mechanical product
methopholine
micrometeorite infall
Miradouro
mode selector switch
modified differential equation
moonstrike
moscow' onderstepoort
moveout
multiple track cam
Nephton
paddlewheeler
papilionine
percentage of ewe bred at first heat
philauty
Ploegsteert
Podkamennaya Tunguska
pointer information storage structure
poor-me
print name
processing costs
push type slab kiln
Quatipuru
rabeynu
railway classification
remote launch
S completion
savourlessnesses
soil physical properties
soiling food
stock cover
subcooled boiling
sue for
tape punch girl
tethered system
theory of maintenance manual
thigmokinesis
third line forcing
tie plate mill
to cough up
ultrasonovision
uninspiringly
user-programmable keys
Veronica longipetiolata
wattle and daubs
XENOPELTIDAE
yard management