[化] 顺式构型聚合物

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(186) / 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(214) / 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(183) / 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(201) / 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(262) / 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(254) / 评论(0) 分类 Scientific American(四)月

This is Morning Edition from NPR news. I am Steve Inskeep and I am Susan Stamberg. Russian and Chinese forces today begin 8 days of joint military exercises. Some ten thousand troops are expected to take part, making this their largest joint military

发表于:2019-01-08 / 阅读(269) / 评论(0) 分类 2005年NPR美国国家公共电台

By Robert Raffaele Washington 27 March 2008 A new type of surgery may make it easier for patients who would otherwise require a more invasive procedure. The new type of operation makes it possible for doctors to remove unwanted tissue through a patie

发表于:2019-01-09 / 阅读(225) / 评论(0) 分类 VOA标准英语2008年(三月)

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(161) / 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(281) / 评论(0) 分类 VOA标准英语2016年(二月)

As was the common practice with the gods of Olympus,Zeus and Hermes were visiting the world in disguise.One day they came to a village.At a thousand house sthey knocked,and a thousand times they were refused rest and food and drink.At last

发表于:2019-01-30 / 阅读(240) / 评论(0) 分类 阅读空间
学英语单词
acoustic analysis
act of randomization
ai i.
alpha centauris
arecord
arnage
assembly language instruction code
axiom
bakstone
Bassersdorf
bellafline
benzallactic acid
bimorphisms
biomasses
bow down one's ear to someone
bridge ware
brogrammer
bumper bar
butt face dowel
calling relay
cartographic perception theory
cephalodella gibba
chemorepellents
collergang
color fastness to water
cosine secant construction
crazen
Debre Werk
Desivon
diagonal pouring
disavows
draught mark inspection
dual-face milling machines
elevator periscope
Eria crassifolia
error robustness
escaping arc
Euphrates R.
fire control unit
flos daturae preparations
gamma heating
genus phytolaccas
great coat
Grecian pitch
guanidinoacetate transmethylase
harrow section
hemopysis
highresolution infrared radiation sounder
inblowing
iniquitously
interlocked signal box
iodate
islandwide
itemise
james harvey robinsons
java wax
lessius
lit'rally
livvy
lobipes lobatuss
longtails
maintenance project
matters of public knowledge
mesocoele
messerschmidt
metallic valve stem packing
multiline production
multiple addressed telex
nationals
OBM process
Okeechobee Waterway
once-taboo
Ormosia longipes
oscillating regulator
osteologer
overconditioning
overlapping observations
pressure feeding
primigeniuss
racetracker
recrudescing
regulatory mechanisms
rhythmer
roaches
rosenkrantz
sand lovegrass
schwarzenberg
signal extraction
Skarstind
sorehawk
speleo-
technological source
three-level channel
tidal nonharmonic analysis
tide level
toxophylaxin
trade descriptions ordinance
transarisanensis
Transition-period
verged on
vermilion plus substance
wave-number spectrum