含氯聚合物

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(144) / 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(172) / 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(152) / 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(155) / 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(200) / 评论(0) 分类 Scientific American(九)月

This is Scientific Americans 60-second Science, Im Steve Mirsky, got a minute? Friends who had a swimming pool also had a little sign posted that said, We dont swim in your toilet. Please dont pee in our pool. Despite such widespread admonitions, 4/5

发表于:2019-01-08 / 阅读(150) / 评论(0) 分类 Scientific American(五)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(160) / 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(209) / 评论(0) 分类 Scientific American(四)月

1. Thousands of war protesters converged on Washington today. They marched from the Vietnam War Memorial to the Pentagon to observe the 4th anniversary of the start of the war in Iraq. 2. Meanwhile the violence continues in Iraq. The military says t

发表于:2019-01-08 / 阅读(188) / 评论(0) 分类 美联社新闻一分钟2007

By Margaret Besheer Baghdad 06 April 2007 Iraqi officials say a suicide bomber has detonated a truck filled with explosives and chlorine gas near the western Iraqi city of Ramadi. At least 27 people were killed and dozens more injured and sickened. F

发表于:2019-01-09 / 阅读(182) / 评论(0) 分类 2007年VOA标准英语(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(121) / 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(228) / 评论(0) 分类 VOA标准英语2016年(二月)

AILSA CHANG, HOST: Scientists announced today that they have figured out the cause of an outbreak of Legionnaires' disease in Flint, Mich., a few years ago. Twelve people died. This was at the start of the city's water crisis. And the problem was a l

发表于:2019-01-16 / 阅读(160) / 评论(0) 分类 2018年NPR美国国家公共电台2月

Everybody loves the swimming pool. But how clean is the water in the average backyard or public pool? If you trust chlorine to take care of germs, you're in for a surprise. Chlorine and other disinfec

发表于:2019-01-26 / 阅读(161) / 评论(0) 分类 阅读空间

Scheele's one notable shortcoming was a curious insistence on tasting a little of everything he worked with, including such notoriously disagreeable substances as mercury, prussic acid (another of his discoveries), and hydrocyanic acida compound so f

发表于:2019-01-29 / 阅读(122) / 评论(0) 分类 万物简史

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(136) / 评论(0) 分类 万物简史

UNITED NATIONSThe U.N. Security Council unanimously agreed Friday to establish a joint investigation mechanism to identify perpetrators of chlorine and other toxic chemical attacks in Syria. It is the first time the council has sought to establish ac

发表于:2019-02-04 / 阅读(96) / 评论(0) 分类 英语新闻

By Margaret Besheer Irbil, Iraq 17 March 2007 In the volatile Western Iraqi province of Al-Anbar, suicide bombers driving trucks filled with chemicals struck at three different locations late Friday afternoon. U.S. military officials said Saturday at

发表于:2019-02-04 / 阅读(170) / 评论(0) 分类 2007年VOA标准英语(三月)

TAIYUAN, May 4 (Xinhua) -- Coca-Cola Shanxi Beverages Co. Ltd. on Friday announced the resignation of its general manager and the suspension of several employees after admitting traces of chlorine were found in some of its drinks. The company also ma

发表于:2019-02-06 / 阅读(197) / 评论(0) 分类 英语新闻

文本: Max: Okay, time for some Chloe cosplay... Chloe: Hey, there you go! Rachel left a bunch of her clothes with me... She's your size. Max: But not quite my _(1)_ . Chloe: Max, you don't have a style yet. At least give it a try. You can always

发表于:2019-02-27 / 阅读(253) / 评论(0) 分类 小龟乐游记英语短文
学英语单词
Aconitum forrestii
Alan Minter
alkaline primary cell
althausite
application
axial displacement
barrel extension
bicartesian
bingeful
blockiness
Budduso
Bupleurum bicaule
caeruloplasmins
calabars
case-notes
chain-plate
check up on
closed nuclear shell
Curva Grande
Da Huoluo Dan
Darriwilian
dedecorate
deflected thrust engine
detorting
dicarbene
dishabituated
dock sb of sth
electron-beam melting furnace
entras
erythroleukaemias
ficus formosana
folded-chain crystal
front combination lamp
Fuhlendorf
gastric outlet obstruction
generally-useds
granitose
guarantee incidental to a contract
hair feather
hilly terrain
His Master's Voice
input protection
intermediate proof
It is quite a different story.
katharometers
less-expensive
lexes
library staff development
lierre
lucidina roseonotata
mesoglutaeus
Mess-around
mixed-flow water turbine
motion pain
N. E. P. A.
net exposure
Nivernais
noonly
nut shaping machine
on the open market
ophthalmospintherism
oral diagnostics
overt response
oximinoglutaric acid
paleoepidemiology
Papaver heterophyllum
pen alloy
perspective sketch
plant growth in high-latitude region
prefeasibility study
priority application
production run
propellant
proximal phalangeal joints
rainbow seaperches
readiness monitoring operation
reverse-acting control element
rostrum (belemnoidea)
saletan
Salici
seafloor spreading theory
seedhouse
spermogonium
state of emergency
stem light
table-beer
tapering shape
taune
tele
to whip out
torreyagrandate
tots up
Tuvalu dollar
undefined record
unpredictableness
upward-acting door
Valona
wearing glasses
weight value of practical mass
Wilson, Cape
Zolotaya osen
zone-void process