乙酸苯丙酯

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

发表于:2018-12-18 / 阅读(84) / 评论(0) 分类 万物简史

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(72) / 评论(0) 分类 Scientific American(三)月

β-Amyrin β-香树脂醇 α-Amyrin acetate α-香树脂醇乙酸乙酯 β-Amyrin acetate β-香树脂醇乙酸乙酯 β-Amyrin palmitate 棕榈酰β-香树酯 Anabasine 毒藜碱 Anagyrine 臭豆碱,安

发表于:2019-01-03 / 阅读(66) / 评论(0) 分类 医务英语

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(73) / 评论(0) 分类 Scientific American(四)月

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(56) / 评论(0) 分类 Scientific American(十一)月

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(120) / 评论(0) 分类 英语新闻
学英语单词
.a3m
air diffusion aerator
alderfly
alumina porcelain
anhydrite process
appendicolithiasis
aquilas
ballote
Belisha beacon
bloomer girl
Bothenhampton
Bourbonists
cast an eye over
caveat venditor
cephalagia
Chionocharis
chlorops
church pennant
commerford
community antenna television line extender
COMPR (compressor)
cowpats
cythion
digital main line
displaced-person
diving signal
drawing-back of pillars
dullin
El Frasno
electrocorona seed cleaner
enamellers
epimanikia
fermentingdough
francois villons
gain from trade
grid data bank
gyroscopic stabiliser
haemorrhagic strokes
has us
hydraulic organ
imperial decree
imshaugia aleurites
interactive terminal protocol
iodomercurate
iron-Gehlenite
isotyping
Kamchatskiy, Mys
Keyser's pill
knob and trail
Kushan dynasty
leveltheodolite
line vortex
machinist
made my choice
manning of ship
Mayraira Pt.
moghte
multiplier heat exhauster
nonrepeating-decimal
on the fizzer
pentanols
phellinus cyclobalanopsidis
pissoirs
poison prevent system
poisonous materials
prestigious university
primary retarder position
pseudocellus
rain ice sleet
rarefied gas flow
real-time multimedia
recandescence
rough synchronizing
Saussurea lacostei
Scott's Emulsion
scurvier
sequential i/o
shavonte
silicon carbide fiber
similar covering
sinking operation
slippery when wet
steel cord strain gauge
storify
surrebuts
symmetric form
tare weight
tenis
test conditions
thick-neckeds
triangular distortion
tschirgi
tsheg
tungsten halide lamp
undergrowths
usual suspects
warp bridge
wekeen
welcome to the club
wild soybean
work on all cylinders
Xylocarpus granatum