硬聚合物

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(63) / 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
acetyl coenzyme A hydrolase
affectively
aid-de-camp
Anabarskoye Plato
appointed defense
around sawing
aurantifolia
axial double mechanical seal
Balaam box
bastard ganister
beginning attribute character
blinkled
boll-weevil
brake lamp switch
budget norm
chelidoperca pleurospilus
chinguard
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common drain
common genital cloaca
compiler dynamic test
csars
demurity
dirigo-motor
doleys
double skin boat
East Malaysia
el paso de robles
farm tax
gablet
Gaussian constant
gesticulative
glass fiber reinforced
gogglebox
graphite whisker
hard tick
have an interview with
heat resistant pigment
incerative
inclined parallelopiped
Ira Gershwin
lack of capital
land earth station
Laportea violacea
local frrtilizer drill
low-carbon
loxoconcha szuchunga
lydder
M-3,M3
macrinus
Mandalya Körfezi
Marquess of Queensbery rules
mash kettle
misrouteing
mortising slot machine
muhtar
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outright electrical failure
overmeasured
overponderate
owsen
pacemaker pulse monitor
pandiculating
parovariotomy
partial loaded condition
phyogemmarium
plethon
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principle of limiting point
Pselaphidae
pulling wheel
quasi-transverse propagation
ramoth
ranchy
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rock drill boat
rocks the boat
sanyu
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scissor jack
screen gauze
secondary flow
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sliding contact of interface
smutmonger
spar miller
stemmeries
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sucker-rod pump
Suonenjoki
television programs
the world's end
transparent assembly
unplanked
virtual machine control program
viruscan
wandering welding sequence
watch guards
weeviled,weevilled
yabba-dabba-doo