[化] 烧蚀聚合物(如硅橡胶)

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(187) / 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(219) / 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(187) / 评论(0) 分类 Scientific American(一)月

Lowering the Ceiling on Roof Energy Losses 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 traditional black asphalt roofs heat up in summer and s

发表于:2019-01-02 / 阅读(204) / 评论(0) 分类 60秒科学

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(268) / 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(197) / 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(264) / 评论(0) 分类 Scientific American(四)月

Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o

发表于:2019-01-12 / 阅读(163) / 评论(0) 分类 2016年VOA慢速英语(九)月

'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded

发表于:2019-01-14 / 阅读(286) / 评论(0) 分类 VOA标准英语2016年(二月)
学英语单词
airfield rescue
alarm reaction
alva
anticrocking agent
arcanobacterium haemolyticum
arrange reinforced material
ascribes
autotransplantations
Baroco
begrudge
books of obadiah
british house of lordss
britomart
bull-kelp
buoyancy level measuring device
Butschlia
casing fat
clofenetamine
common yellowthroats
consumer socialization
Corumiquara, Pta.
deathwish
deep-well plunger pump
dukelet
Dundreary
emeers
energy storage
eugenia oil
exploration course
fall-boards
farm power plant
floating-point instruction group
fore-barrier
foreby
gravid
guide rod type diesel pile hammer
harbor commission
hedebo
hickory oil
inertial coordinate system
infin.
irrational monomial expression
land sale
linguistic approach
magnetoelastic wave
management-staff
mass unbalance torque
mean semitone
menopausal period
multicolored symbol
multinomial process
multipole
najib
not responsible for decay
old nova
optical fiber system
ordinary-lookings
organizational structure of ledgers
P2VP
packet-writing
parachlormetaxylenol
pay ... in
peregrine (falcon)
phenyl-xanthogenic acid
pipe sample
placentary
plimsoll duck
preparatory study
printer authorization matrix
pseud.
random-selection model
redox potentials
regression-discontinuity analysis
restart kick
retromaxillary region
reverse shaft counter balance spring
rise-dwell-return motion
rolled stock grab
round flange unit with spigot joint
scolloped
sedimentation number
shift invariance
side joint
sizematic
skirt the base of
soil-protection wood
somar
São Mamede, Sa.de
take to one's feet
technical metrics
Teucer
thrombopenic purpura
turn-pike
Tylograptus
us code
Vardarian
vlaho
vv. tympanic?
with a long face
X-ray densitometer
Xanthium japonicum
zirconium anhydride