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
advice sheet
al khaburah (khabura)
amabelle
andresson
apparent earth conductivity
aspergilus flavus
azaleamum
Beggars can not be choosers
bevalaqua
bilenge
bit-serial common carrier
blow off cock
brazen it through
bring one's hogs to a bad market
brow antler
buildingwide
by-tale
chondriomere (meves 1918)
Coast Guard
cobalt unit
common-law cheat
complementary symmetry emitter follower
confirmed negotiation letter of credit
coriolis theorem
cremest
cryptomer
dialyzability
dictionary entries
Dictionary of National Biography
dilaurate
disc(disk)
drive someone to despair
drygalski ice tongue
Elatostema hekouense
epigynous stamen
fatigue crack initiation
galbart
hairnetted
Herbasse
herbrough
holy men
horn process
hydrogen oxygen fuel cell
inductotherm apparatus
internal diameter of delivery hose
jackrod
jacques loebs
joint estimation
Kaliyuga
leading circle concept
master reference machine
metering digit
milphosis
mitment
Moore L.
multiplicative object
multiprogramming interrupt
nitrosonaphthol
nominal thickness
nondated
Nyssa shweliensis
olefinic oxygenation
omnimane
opposite forces
optical direction ranging
out tuning
outrigger wheel
paracoccidioidal
peacockery
phototelegraphic
post-fix
protobios
recurrent backcross
recursive contour coding
retained of trade
root canal irrigation
run a plant
schwartzmann phenomenon
securities deposited from others
semiautomatic working
serpentinic
shouldermark
sireny
spellbinder
spheric pyranometer
SR (shift reverse)
statistical identifiability
striate body
successor
sulfurylfluoride
sulphur butterfly
tensile test piece
test of hypothesis
Three Class of Reserves
tinosporine
tr.
tree-ring analysis
triple valve
trophogenic layer
UHF carrier
unconvertible security