聚合物稳定化

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(73) / 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(62) / 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(105) / 评论(0) 分类 Scientific American(四)月
学英语单词
-opses
a good rule of thumb
all-inclusive
angioprotectin
ankyloses
augmentation of apparent semidiameter
authorized fund house
base accounting unit
birth defect
Bol'shoy Kaltay
brachiocubital
bristlegrasses
byhynden
central pattern generator
centre frame
dead centres
deep water line
discrete time filter
ecas
electrocathode
employee badge number
ethnolandscape
eupyrchcoite
face-sits
Fieldata
French Democratic Confederation of Labour
Gabalon
Galinoporni
generated error
gnomic
goes to sleep
have an appeal for
hessenbergite (bertrandite)
high speed brass
homestead law
horseradishlike
Hulshout
Hypsiprymnodon
incompletae
interwoves
inthronistic
keeping an eye on
Kelvin
Langry
length of record
length of road open to traffic
lima bean pod borer
local vector
lyctus
lymphohematopoietic
manufactured articles of daily use
Markivka
miana tick
microfadeometer
multi gigahertz microprocessor technology
murrhine glass
navicula mutica
ni'ihau
non-involved
oblique
on-line console
padded down
pear psylla
plinth walling
plums
Pojuca
prize-winning
proportioner regulator
put a wet blanket throw a wet blanket over
Qinā, Wādī
recirculating zone
Republic of Belarus
response characteristics
rhizoma hydrastidis
ride or die
seismic log
sling stay channel
social seasons
soda-boil bleaching
statutory ceiling
strip rolling mill
suesses
supraorbital crest (or supraorbital ridge)
suradditions
Taggia
take an attitude
task number
thermolyses
timarli
trampin'
transient (radioactive) equilibrium
trouped
tungspar (barite)
umbilical knot
unanxiously
unconscious of
unpredict
Variable Annuity Corporative of America
venetoes
water companies
wraps it up
xgk