偏光显微镜

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-08 / 阅读(58) / 评论(0) 分类 Scientific American(六)月

This is Scientific American 60 Second Science, I am Cynthia Graber, this will just take a minute~ How can we search for life on exoplanets? Step one: examine the Earth as if it were an exoplanet. Thats the idea behind a recent look at earthshine. Res

发表于:2019-01-08 / 阅读(58) / 评论(0) 分类 Scientific American(三)月

This Scientific Americans 60 senconds science. I'm Cythia Graber. This will just take a minute. How did the zebra get stripes. One theory holds that stripes help confused predators. But stripes might be primarilly to protect zebras from ferocious ins

发表于:2019-01-08 / 阅读(66) / 评论(0) 分类 Scientific American(二)月

'The Diamond Lens' by Fitz-James O'Brien, Part Two 钻石透镜 II by 菲茨詹姆斯奥布赖恩 Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and final part of the story. Here is Maurice J

发表于:2019-01-12 / 阅读(139) / 评论(0) 分类 2016年VOA慢速英语(九)月

AMERICAN STORIES - The Diamond Lens, Part TwoBy Fitz-James O'Brien Broadcast: Saturday, April 08, 2006 Announcer: Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story is called The Di

发表于:2019-01-30 / 阅读(146) / 评论(0) 分类 2006年慢速英语(四)月

The Eye of the Dung Beetle A number of animals, including honeybees and butterflies, use sunlights polarization in their navigation s , but the dung beetle is the first animal ever discovered to use moonlights polarization to guide its travels. Polar

发表于:2019-02-16 / 阅读(48) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
Acer sunyiense
Ajish
bailey wall
balancing pit
bechelli
behavioral measure
breechesless
Campanula langsdorffiana
candomble (brazil)
capable de tout
carbon-dioxide lamp
channelling machine
cooling water pump
correlatability
cotton teal
dilute acid wash
discask
dish ... out
downy haw
dry glazing dispenser
earthquake proofing technique
economic values
endellione (bournonite)
filament sag
finite multiplicative group
friedlaender
full ripe
g.l.(grain line)
genus gymnogypss
groundscore
gujaratis
history of vegetation
homeys
hurumite
hypermelanotic
hypoglauca
infrared(drying) moisture meter
labaton
labile pulse
Labylinth seal
laws of moses
layland
lectal
leisure suits
licari
liquidambar acalycina h.t. chang
lysionotus pauciflorus pauciflorus
magnetotropism
mesenteric chylectasia
microradiograph
Muheza
multiparticle correlation
notifying bank
nullable
Octobery
Onnes, Heike Kamerlingh
onthophagus (phanaeomorphus) cernyi
optionaires
order lepidodendraless
order of tensor
Percy boy(-pants)
peroneal groove
pigmentum iodoformii compositum
pixeys
platform pitman
plysteer force
pnagus diphtheriae
power transmission shafr
powertrains
primary current of a current transformer
psychoanalyse
reef-knotted
relicking
Restitutionism
salve
Scott Depot
secondary lymphoid organ
security operations computer
seizing up
semigranular
silver carbide
sinsible heat
siphonaria rucuana
sizing material
skullfucking
small chop
special bracket
special purpose map
stand buff
strengthner
strictly positive functional
switchcrafts
Tamassoumit
throw-out of
torticolliss
unlaces
unpossibilities
virtual moment of inertia
Wada-yama
water guide stand
white pyrite
yellow-blue color blindness