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This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(65) / 评论(0) 分类 Scientific American(六)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(71) / 评论(0) 分类 Scientific American(一)月

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(62) / 评论(0) 分类 医务英语

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(90) / 评论(0) 分类 农业与发展

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(59) / 评论(0) 分类 经济学人科技系列

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(73) / 评论(0) 分类 万物简史
学英语单词
3-bromo-1-chlorpropene-1
absolute efficiency of estimator
agenda sheet in audit
ante-clypeus
antistaphylococcal
atmospheric geology
Atner
ATPV
availment
binary vapour-engine
binder for tractor draft
botter
brachysphenocephaly
bubble tower condensate
Calciopalygorskite
callathump
cargo sheet clerk
carry to extremes
cast-steel stem post
cellular structure
characterlessness
chari rivers
chosisme
chrionema chlorotaenia
cold tandem mill
combined ribtubular knit
common carotid artery
cord fastener tip
curve of erosion
daylight saving times
decoding for fire code
delphinidin-monoglucoside
diffraction grating
diving decompression stop
Dyar's rule
epiblastotropic reaction
epic fails
exhausted air
flooring nailer
gibbosum
gippo
goland
googolplexes
guineensis
hair-raiser
high degree of scarcity
hydrodistentions
industrial conflict
Kawit Str.
lack of value
lasiopelta longicornis
lung governing skin and hair
magnetostrictive oscillator
make the best of
malediction
marquette
master tap
mitigated silver nitrate
monetary values
NACSTMBethesda
noncurved
not liable for indemnity
nutramines
opei
period of adjustment
Phuong Lieu
pillars of islam
piston bottom
pit head
pontac
power-zoom
precommit
progressive burning charge
proprietary equity
quadriparous
rhizoglyphus setosus manson
rim lighting
rockshelter
rotary aeroengine
scaber
shelf sea
shingle block structure
Solidariada
sound knot
standard wire gauge
steganalyzes
stock exchange transactions
strongylium cultellatum taiwanum
structure of imports and exports
taperstick
Task Pane
tax-dodging
teleprinter network
tenor stave
tetracor
the ins and the outs
total nose reconstruction
vater
vector field
vetner
water-suction cleaning appliance
wilken