四苯基丁二烯

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(128) / 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(103) / 评论(0) 分类 Scientific American(三)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(131) / 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(75) / 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(72) / 评论(0) 分类 英语听力文摘 English Digest

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(115) / 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(115) / 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(117) / 评论(0) 分类 Scientific American(十一)月

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(242) / 评论(0) 分类 英语新闻

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(137) / 评论(0) 分类 万物简史
学英语单词
-browed
a'cockbill
activity-dependent reinforcement mechanism
adnexa
al lith (lith)
Anloy
antidromic impulse
azymous
berats
bitmask
block prefix
bridge escape
Bruch's membrane
Bruyères-et-Montbèrault
buzzphrases
cadre's responsibility system
Caesalpinia bonducella
cargo throughput
china's economy
cocainomaniac
coerulein
coined word
cold spray
color-blind
cooling grinder
core-rope storage
corynograptidae
crown-tree
cutlery steel
dee jig
dithiosalicylic acid
dormans
dratted
dudly
earthed circuit
edmond de goncourts
erosion pollution
external line
fault isolation routine
fork-join
fracture of scapula
frequency-domain estimation
fridas
Friedman's tests
gamesman
generalized pupil function
green peach aphids
grenz ray
guzhengs
haeger
hana
hierographer
Histaphene
hold the record of
in respect to
infrared absorption spectrum
initial fibre structure
insolat
isoaspartate
Kando-gawa
laboratory-grown
large exposures
Lewis County
logical schema
Mahonia japonica
mampy
Many a pickle makes a mickle.
micro and semimicro viscometer
Munnsville
n-oct
Never too old to learn.
nonpensioners
Oedipus complexes
over-extension
palpitation due to alarm
pedipalpate
perturbating
pisiformis
pneumatic receptor
power-boats
registry of merit
rememorations
return valve plug
roseworm
row scanning
Roxburgh binding
salashur
San Vicente, Pta.
shahovite (shakhovite)
sheath-anchor
six-unit error detecting code
stem radiation
stevedorings
subjective reading
subtest
tongue twister
tubera olfactorium
twin labor
vaporizing pressure
vitreous humor (or vitreous body)
Vresse
zero-phase