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(206) / 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(191) / 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(423) / 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(438) / 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(280) / 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(232) / 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(216) / 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(166) / 评论(0) 分类 听播客学英语
学英语单词
ACSS
active stack
aerospace factor
aeroview
AFMC
air-bag support
Assel tube mill
Aux.B
auxiliary strut
backing log
barltrop
bottlefish
brush-turkeys
bug-free
Bugdayli
Bukowsko
cambeaks
capitellum fracture
charvas
clipping level
cluster around
coaxial electrode
color mixture
contrary event
coreqs
decit decimal digit
deer's tongue
directional balance
disprepare
double strand repeater
emotion-based
ethylmethylacetonitrile
euphoric
external database
foreign pigment
genus Fumaria
give sb grief
government paper
hair-dye
health codes
Hieracium hololeion
high strength titanium alloy
Highcliff
holdless
ieas
irradiation efficiency
isostructrualism
Jeesio
keep one's mouth closed
Kruunupyy
Leezen
lens shim
lowrank
LSSAC
marine electric range
melting cup assembly
metallising
mixed hemorrhoid
mockings
molybdenum base composition
Muurame
naval power
negapillin
Ngomeni
open-ended characteristics
OPNs
oven mitt
oxidation reduction cell
p-ancas
p-electron
peacock blue lake
perineal vein
phosphomutase
playground balls
pre-heterokinesis
product supply task control
pseudodax moluccanus
sailing order
serrulate plates
sixteenth-note
song dynasties
Souk el Arbaâ du Rharb
spool-type potato sorter
srour
staining trough
supersprinter
technical reliability
tenuissimum
term debt
took up their quarters
TSCO
uneven double-and-twist
unrecorded economy
upper information center (uic)
vv. palpebrales
wind-speeds
working viscosity test
wulder
yeast serum
Zam.
Zeuthen-Segre invariant
zizyphus vulgaris intermis