[化] 反应性聚合物; 活性聚合物

BY STEPHEN R .COVEEY The first habit is 1)proactivity. Be proactive. The word proactivity is fairly common in management literature, but you won't find it in the dictionary. It means more than merely

发表于:2018-11-28 / 阅读(315) / 评论(0) 分类 疯狂英语2001年

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(184) / 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(209) / 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(182) / 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(194) / 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(254) / 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(191) / 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(246) / 评论(0) 分类 Scientific American(四)月

This is Scientific American -60 seconds science. Im Cynthia Graber. This will just take a minute. A coal mine can degrade its local environment. But fungus may inadvertently help clean up the mine with its own waste products. Researchers worked with

发表于:2019-01-08 / 阅读(214) / 评论(0) 分类 Scientific American(七)月

This is scientific Americans 60 second science,I'm Cynthia Graber.This will just take a minute.A coal mine can decrease the local environment but a Fungi may indivertantly help cleanup the mine with its own waste products. Researchers worked with the

发表于:2019-01-08 / 阅读(224) / 评论(0) 分类 Scientific American(七)月

HEALTH REPORT – December 4, 2002: Test Warns of Heart Attack Risk By Jerilyn Watson This is the VOA Special English Health Report. Since the nineteen-fifties, American doctors have tested their pati

发表于:2019-01-11 / 阅读(186) / 评论(0) 分类 健康与环境

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(154) / 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(277) / 评论(0) 分类 VOA标准英语2016年(二月)

英语美文-主动与被动语言的重要性 语言是表达自我,交流十分重要的途径。一个人的语言能传达很多信息,包括一个人的性格,思维,态度,生活环境,经历,职业等等。很多时候,我们作为

发表于:2019-01-17 / 阅读(168) / 评论(0) 分类 卡卡课堂早餐英语

HEALTH REPORT-Heart Disease and C-Reactive Protein By Cynthia Kirk Broadcast: Wednesday, January 19, 2005 I'm Gwen Outen with the VOA Special English Health Report. American researchers have found evi

发表于:2019-01-30 / 阅读(244) / 评论(0) 分类 健康与经济

C-reactive protein is an indication of inflammation in the body, and, at high levels, is considered an early sign of future heart disease. It's a risk factor in a similar way that elevated cholesterol is a risk factor for heart disease, says Asheley

发表于:2019-01-31 / 阅读(187) / 评论(0) 分类 VOA标准英语2010年(三月)
学英语单词
advanced tactical fighter (atf)
Amarāvati R.
American Broadcasting Company
amphiodont
amyl oxide
anticorrosion treatment
antisocial type
arabi
arched conduit
Athyromazole
average candle power
b. infrapatellaris profunda
backed away
Benard cell flow field
bipseudoindoxyl
bleeding of tonsil
block protector
calories in cereals
channel-surf
cloud speed
colletotrichum lagenaria
colour action fringe
concrete blockyard
Costa Dorado
couchman
current fund
data delimiter
Dicyl
diffusion-age approximation
directional logging
duchardt
EDPS
Ellis' lieaments
error interrupts
ferronemalite
Fimarbi
fire bellied toad
french method of thinning
fused phosphate bath
g.ho.st
gd-fm
greenbrae
herberewe
imploit
Indian Veterinary Journal
inertial reference assembly
last summer
Liriope spicata
mean higher high water spring
medium diameter
middle-aisling
military managerialics
mini-fix
monofonically increasing function
mounted plow wheels
musk sheep
negro suffrage
neurorecording
non-net
order piciformess
out-blossoming
overjoyed
partes humeroulnaris
phosphate potential
pichette
plutonia sol
pomadasys hasta
positive definite Hermitian transformation
rebutters
redetermination
retimber
reupload
reverted to
risk preferring
rubber acid
ruby copper ore
sanctury
saposins
semi-structured decision
shakeout temperature
short forward rate
smart cookie
softnitriding
soil thermal regime
spherical astronomy
split ends
subterranean divide
surf days
Sussac
syndrome of cold fluid retained in lung
tabrizi
tangential plane
technical introduction
terminal spine
thiocarbonic acid
thoracodldymus
time-varying amplitude
unspat
vasomotor nephropathy
vibrotron
working capital turnover time
yuenkanin