2013年Scientific American's Six

Astronaut M B spent 199 days on the international space station in 2009.On Feb. 17th 2013, he told kids about his time in space as part of Family Science Day Effort on the Annual Meeting of American Association for the Advance of Science in Boston.Qu

发表于:2018-12-24 / 阅读(78) / 评论(0) 分类 Scientific American(二)月

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发表于:2018-12-24 / 阅读(76) / 评论(0) 分类 Scientific American(十二)月

This is Scientific Americans 60 second Science, I am Sophie Bushwick, got a minute? Comparisons of different animals have shown that larger brains provide greater intelligence, but they also guzzle more energy and have other consequences. Now scienti

发表于:2018-12-02 / 阅读(86) / 评论(0) 分类 Scientific American(一)月

Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. Now, archaeologists have turned up some of those ancient medicines which were preserved in a shipwreck for close to two millennia. The 2nd centry Pozzino wr

发表于:2018-12-02 / 阅读(74) / 评论(0) 分类 Scientific American(一)月

When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the

发表于:2018-12-02 / 阅读(202) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

发表于:2018-12-02 / 阅读(81) / 评论(0) 分类 Scientific American(一)月

This is Scientific American 60 second Science, I am Karen Hopkin, this will just take a minute. There are in fact 100 billion galaxies, each of which contains something like a 100 billion stars. Well, Carl Sagan would have loved to get the latest est

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学英语单词
africa-americans
arctic moss
azidothymidine(AZT)
be in the grip of sth
besugo
black earth
boro-silicates
calibrated
cap spinning frame
Caracarai
cathode rays
census police
center cylinder of gear pins
committee on research in dance
computations
contributed margin of fixed cost
creationary
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deletion mutation
derived-term
dictenophiuras
difenoximide
dipslopes
disc friction
electrohydraulic hatch cover
emergency release push
episyrphus alternans
erection report
extraction power
family education
Fingo
foredisposing
forestry machinery
garbageabetical order
geminated consonant
halogenated ethylene-propylene-diene-terpolymer rubber
hancel
Harbann generator
heavy-duty hoisting equipment
Hedbo
Helicocephalidaceae
hhsc
Hibernian
humannesses
icequake
in the wind
inertial navigation set
Jarnsaxa
keying filter
Ladyboner
love in
lychnost
machlis
maryans
maternal uncle
mormonss
Mudhnib
Oniscidae
ossil
oxo-reaction
passeroes
perceived control
Petrmyzon
phthisic type
polythermal
Pukch'ǒng-gun
quantity of documents
relivant
residual shrinkage
rice seedlings bed
rigidity of the bolted flange system
salesfloor
scale blowing
schiller-spar
seat cover fabrics
secretory structure
Siruguppa
sitting ducks
six-day licence
sound blaster
Spanish tile
Spesutie I.
SRLB
St. Barbara's herb
stackss
standard consistency
stereum burtianum
tabacs
thorium helium method
threepage
Torrijo
toyable
trabalho
tranporting cableway
Trltter
trumen
typewriter desk
Târgu Ocna
vapor-phase electrolytic deposition
volt ammeter
Waltersdorf
yak butter