四氯乙炔,四氯乙烷

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

If you are like many language students, you might have a problem with procrastination. Perhaps you are slow to do homework or study for a test. Maybe you do not like to study or you become distracted while studying. Whatever the case may be, learning

发表于:2019-01-02 / 阅读(359) / 评论(0) 分类 2017年VOA慢速英语(六)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(60) / 评论(0) 分类 医务英语

BEIJING, Aug. 8 (Xinhua) -- China on Wednesday started to review anti-dumping measures it imposed on chloroprene rubber imported from a Japanese company, the Ministry of Commerce said. The move came after the ministry received complaints that Japan E

发表于:2019-02-05 / 阅读(116) / 评论(0) 分类 英语新闻

Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele

发表于:2019-02-08 / 阅读(87) / 评论(0) 分类 VOA标准英语2010年(一月)

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(71) / 评论(0) 分类 万物简史
学英语单词
accidental force
active electronic countermeasures
amiserica babai
anomalocaridids
Australiana
back filled region
Barca de Alva
be a good fist with one's iron
Bigǎr
blower rod
Boca do Moaco
branch root
bruceatin
carcelage
career-high
census takers
Central Office of Information
chewed-on
comma-delimited file
Cornwallis I.
croakier
cubic cargo
curtailed
data package
deck girder
dicaryotic phase
dislocation of lens
disrober
Dörscheid
early evaluation
earthquake migration
empty-nest syndrome
exchange cover
fantino
festinates
flexitimers
flip chip on board
floricas
folding board
frame buffer display
get ... going
gliltter
gravity apparatus
hate-speech
headline earnings
herdsmen
hexamethylenetetramine camphorate
histohemocytoblast
imbursed
ingot head
insular economy
isabellina
jacobuses
jpc
long tonforce
m. plantaris
May-lord
metastatic ophthalmia
minsk
mixing pan
monoscope tube
nickel silvers
non-deterministic time hierarchy
nonciliate
open registry country
Orawka
oriental pearl
OTG USB
parergy
patch code
periependymal
piss you off
position title
precisianisms
price ruling today
pugilism
racemules
reflecting stereoscope
retracteth
rule system
single-bottom vessel
single-sideband suppressed-carrier
solacers
stenogastrine
stramenopiles
subclass ostracodas
subjoinders
superexpensive
Tarbell, Ida Minerva
textweek
the unemployment rate
thermal mechanical performance testing apparatus
time-lines
to slip
tongue examination
tuck-boxes
unavailability time unplanned
unprotected convoy
violence against women
warping coefficient
wild basils
worm dirt