均链聚合物

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(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(107) / 评论(0) 分类 Scientific American(四)月
学英语单词
abrasive cutting off
active slide area
Alginor
alive to sth
archive header format
automatic loadel
bacille calmette-guerin (bcg) vaccine
backscroll
bacteri(o)-
balanced control surface
bank run
bavarian beer
bleeds white
blue-and-silver
brendel
Callicrates
chemistry of metal
Chinese radishes
choice of data structure
clarke's internal electrolysis apparatus
clarks town
clutch explosion
csei
cut the crap
Dalan Tolgoy Uul
daredevil
deagnostic function
deep freeze compressor
Deutschemark
direct deposit
electric curtain of travelling wave
equipment replacement models
evanescent light wave
Ever-brass
external suture line
eyes of her
facial isomer
family apogonidaes
field changes
Fort William-Port Arthur
frequency distortion
Fritz Albert Lipmann
gambaud
generator circuit
golden cross
gyalpoes
hemorrhagic catarrh
hit sb. when he's down
hurry-burry
hydrophilic grouping
info quote
Ish-bosheth
jeames
labor cost sheet
Las Lilas
lay a finger to one's lips
ligadin
light the way
Lipotyphla
literalist
matrix pattern
method of finite differences
mold polysaccharides
nail knots
nodular fibrosis of skin
normal formulas
OH SNAP
open-faced sandwich
opisthonotal shield
palenville
plain filter
plaque control
Platonists
point of curve
pontell
pore pressure gage
pultrusion process,pultrude
reflection band
rens
roller-way face
saimins
searching party
simple twisted rope
skeletal traction through olecranon of ulna
sonochemical
south winds
special weapons equipment test
state-owned-enterprises
Stokes' lemma
stone cutting
strip-chart temperature recorder
sympathetic nerve pain
temperature interval
the world is someone's oyster
three-way intersection
tropical worsted
ultraviolet ray ophthalmia
upstaging
watson's ' u' statistic
Yareyal, R.
yestermorrows