四硝萘

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(175) / 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(154) / 评论(0) 分类 医务英语

分集介绍:导数,商数,正弦和余弦 Derivatives.of.products.quotients.sine.cosine

发表于:2019-01-05 / 阅读(392) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

分集介绍:导数,斜率,速度与变化率 Derivatives.slope.velocity.rate.of.change

发表于:2019-01-05 / 阅读(392) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Silly Sausage是Nitrome于2011年5月28日发行的一款益智类游戏,它是以香肠在尽量不碰到其它损失生命物体的情况下吃光所有的钻石再到达终点为标

发表于:2019-01-08 / 阅读(243) / 评论(0) 分类 英语对接游戏

HEALTH REPORT - New Heart Drug Shows Promise in African Americans By Cynthia Kirk Broadcast: Wednesday, November 17, 2004 This is Bob Doughty with the VOA Special English Health Report. Heart failure

发表于:2019-01-30 / 阅读(177) / 评论(0) 分类 健康与经济

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(186) / 评论(0) 分类 万物简史

Today we go on a journey. It starts in Sweden over 100 years ago; and then moves to London; and finally moves to future worlds and other planets. But we start in Sweden. Alfred Nobel spent his life finding ways to blow things up. He was born in 1833

发表于:2019-02-19 / 阅读(139) / 评论(0) 分类 听播客学英语
学英语单词
a juicer
absorbence coefficient
adjective clause
aegises
aero-bronze
Aglaonema simplex
air transport insurance
anthracnose of gambo hemp
anti-natalist
antiseparation
auscultoplectrum
average sales expectancy
Bacillus adhaesioformans
baekam (paekam)
baptisms of fire
Beard's treatment
belt reactance factor
bill posting station
blameshifted
Breton caps
cathode cleaning
check-out
cognitive insight therapy
cold laboratory
corticobulbar tract
D. E. P.
Data Circuit-terminting Equipment
demi-definitive time
double beam
dry test gas meter
dumas
Ebbecke
electron beam projection exposure apparatus
embargo policy
external-pressure
fibrcolonoscope
film editing machine
firsts
flabellatum
forced oil-cooling
galathea b. (south b.)
gas coal
gyonnese
high-limiting control action
i-told-you-so
ice store-house
Ilex revoluta
infantile oxyuriasis
inserted implement
institutional agenda
jet band
julyan
kinesthetic sensation
Kverkfjöll
landfowl
long-life grease
man-machine communication system
maurcio
merchant cruiser
molybdenum dioxide
nanomachines
North Kesteven
Nubain
odilo
orthognathic
outgoing radiational type
ovarian-cancer
overpressure turbine
pipple
pseudosplenic leukemia
repairing account
restorative force
retarder flap
rinkside
roll-over machine
section survey
ship's service store
software agents
splash against
squad car
standard operation move time
stricken
sustaining technology
system world
taurotraguss
thickening material
tightrope-walking
traveling wave type oscillation
trehane
unheated air dryer
unpumpable
unswizzled
upper vertical tail
usssa
Uvaria rufa
vapour condesation zone
verliche
vitamin S
weak evidence
weidenhamer
what's in it for me
winterkill