对羟基苯甲酸

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

发表于:2018-12-18 / 阅读(230) / 评论(0) 分类 万物简史

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(196) / 评论(0) 分类 Scientific American(三)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(213) / 评论(0) 分类 Scientific American(一)月

Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal

发表于:2018-12-28 / 阅读(186) / 评论(0) 分类 初学者听力文摘精选

its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th

发表于:2018-12-31 / 阅读(179) / 评论(0) 分类 英语听力文摘 English Digest

Humulone 律草酮 Huperzine Serrate P.E 千层塔提取物 Hydroginkgolic acid 氢化白果酸 Hydroginkgolinic acid 氢化白果亚酸 p-Hydroxyacetophenone 对羟基苯乙酮 p-Hydroxybenzylalcohol

发表于:2019-01-03 / 阅读(207) / 评论(0) 分类 医务英语

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(225) / 评论(0) 分类 Scientific American(四)月

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(242) / 评论(0) 分类 Scientific American(十一)月

Researchers Say Malaria Drug Could Also Treat Cancer Scientists know that human cancer cells grow by getting energy from adjacent tumors, where cells have begun to self-destruct. The spread of cancer is accelerated by the death of these cells. This p

发表于:2019-01-13 / 阅读(221) / 评论(0) 分类 VOA标准英语2012年(三月)

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月,俄罗斯最大的大学图书馆之一发生了火灾

发表于:2019-02-02 / 阅读(190) / 评论(0) 分类 英语新闻

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(371) / 评论(0) 分类 英语新闻
学英语单词
a-wave
administer a crushing blow at
al-fayed
Ambathala
anti-malaysia
aqua anethi
automatic channel switch
axial-centrifugal fan
balance forward
barricadoing
bedes
bedwetting
bimodal pacemaker
blue babies
blue-tongues
body-soul
butanediylidyne
by right of blood
bykov
Bφstrup
carbon collector
chelinga
chila
chime clock key
cineritious tubercle
cobaltic hydroxypentammine salt
cold enamel process
compensating illumination
Corse-du-Sud, Dép. de la
decalibration
edit-point
elliptic function filter
faltung
fault bundle
fiddle-cases
field tubes
forced-draught ventilation
full tone original
gamesmen
Guchengzi Formation
hangsterfer
Haryanvi
high power travelling wave tube
in line arrangement
independent periods
interest on the general government debt
ionium age
It's the same difference.
Kastav
Kentucky State University
kephalins
Knapp's striae
kramenzel structure
lactulose
lateral globus pallidus
leeks
licorice spray
lifting furnace
lingots
little-knowns
magnetofluidstatics
mammoid
maximum likelihood principle
meadowwort
monetary markets
non-IS
nonapplicable
pinhole image
planting of layers
play of rail joints
possessioning
problem-oriented system
Pull your punches
real interest actually paid
reconstruction of auricle
recording biscuit
Reyhanlι
rice coal
roof covering
seasonal depression
semi automatic milling machine
separation-individuation
Silicon Prairie
slippery surface
slipshod
Soukra
source location
Stoute
strategic business plan
tabular roots
tidal power generation
Togul
tritonoturris cumingii
unattire
uncore
us ms
Verin Talin
warezing
weak object
weft face twill
Weirchrome
werlde