同素缩合酸;同素聚合酸

Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(146) / 评论(0) 分类 (科普英语)Earth and Sky

How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t

发表于:2019-01-02 / 阅读(180) / 评论(0) 分类 知性英语

SCIENCE REPORT — March 7, 2002: Alzheimer’s Disease By Nancy Steinbach This is the VOA Special English Science Report. Medical researchers say a new study shows a link between the mental condition

发表于:2019-01-02 / 阅读(103) / 评论(0) 分类 科技之光

AS IT IS 2016-02-13 Work Soothes Pain of Acid Attacks In India A caf in India is hiring women who once stayed in hiding after being attacked with acid. One woman, Dolly Kumari, says she stayed inside for two years after a man threw acid on her. He wa

发表于:2019-01-12 / 阅读(77) / 评论(0) 分类 2016年VOA慢速英语(二)月

Magnetic Ring Used to Stop Acid Reflux Heartburn is usually linked to gastric acid that reaches the esophagus when a weak muscle does not close as it should after swallowing. When stomach juices back up into the esophagus, the acid can cause a burnin

发表于:2019-01-14 / 阅读(84) / 评论(0) 分类 VOA标准英语2013年(四月)

By Birungi Machrine Kampala 26 November 2007 Attacks using acid are becoming more frequent in Uganda. Up to 2003, there were only 145 recorded attacks, but over the last three years, there have already been 87. Survivors often suffer from severe emot

发表于:2019-01-16 / 阅读(110) / 评论(0) 分类 VOA常速英语2007年(十一月)
学英语单词
AACE
ac/dc receiver
agarase
algebraic theory of numbers
allchin
arc label
ass-kickin'
atom-free zone
automatic cutting off
bathyraja trachouros
berstein
bimeter
bouncing time
butterines
cinctus
city plat
coenzyme R
coinage office
Commn.
common spindle tree
criticality conditions
Cucumis melo
Cyrano de Bergerac
data explosion
dentonomy
deviation dolphin
discharge through arch dam
distogingival
ditrigonal bipyramid
dotish
ductus cysticus
electronic scram
electronic transfer unit
Eryngium aquaticum
exact differential form
exothyropexia
false-vacuum
fistula of auricle
floatplane
fluid power-law
formosanum
gelatinisation
granulating osteitis
Gruinart, Loch
hanzell
kll
latids
magnificum
make way through the water
mechanical properties of fatigue
middle agess
modern fiction
moment test
neo-cons
neogenic mineral
new economic system
news grid
nonvolatile oil
nucleic-acid
oil-consumings
parathelypteris glanduligera
percussive timbre
personal financial statement
pralayas
pyogranulomata
quarternary quantic
reata
recarburize
rhodizonate
score string
Seereer
shannon function
shipper's guarantee
shunt wound reversible DC electric motor
silico-calcareous tufa
single header boiler
single-phase system
slack shook
snakeroot
spike hole
strain rate
strontium cyanide
structure design
Suomiselkä
supernova radio source
sustainable development of water resources
syngenetism
temperature variation
tipping trough mixer
tossing-and-turning
transfer pricing in competitive intermediate market
travelling speed
tristimulus values (of a colour stimulus)
true vocal fold
turning berth
types of pasta
umbellated
velocity shaped canceler
viorst
water band
Westerhorn
worm sth out of sb