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(180) / 评论(0) 分类 Scientific American(二)月

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发表于:2018-12-24 / 阅读(164) / 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(203) / 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(211) / 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(348) / 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(178) / 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
'ammiyya
abjunct
abrasiometers
Abū Tisht
androstenedione
Arnoya
assistant purser
attantite
biesting
black-body resource
blessed thistles
Bogenfels
bravais-lattice type
Buqay'ā'
capillary wetting method
castorial
catch-breaths
circular aperture distribution
clarties
commission paid on foreign exchange
conspurcating
constraint and variables
crossing over frequency
cypress sedges
defective quality
Diakhao
diclidostosis
distress rocket
diver helper
double-popet throttle valve
electric capacity type liquidometer
electric illumination
enneagon
extraction and stripping apparatus
familial osteoarthropathy of fingers
farsangs
fibroma of small intestine
flaggingly
foot-tappings
frame buffering
Frost, Mount
fundholder
ghost sign
hoodie crow
hypn(o)-
kraties
liquid insulated bushing
marginal geosynciline
mayetiola destructors
mayoes
mental torpor
milgaard
military menace
mineral deposit model
mismarry
Mittenwald
multicarrier transponder
neauer
nonbinomial
nut butter
openable water tank
operabilities
Petmin
petroleum sweetening
phylum chordatas
Pitcairnia
postnodular sulci
power dividers
prediscovered
preformed precipitare
pylori
quasi-optics
queith
real securities
reasoning by induction
round chart recorder
scandinavian loxes
smart product
smoking-cap
softening-up
soil granulation
spacecraft long-term operation management
specific expression
stalked puffballs
stenochory
strongyliasis
swims in
tabubil
tea-roller
Teleostomi
tetrads
the outward man
thermalgia
thresholded gradient
throw clay
thruput
turtle excluder device
vambrace
video editing terminal
viette
wastewater lift pumping station
yousry