[化] 氯化聚氯乙烯

New Solar Cell Minimizes Environmental Risks in Manufacturing Process 新的太阳能电池减少生产中对环境的危害 Scientists in England report the development of a new solar cell that minimizes environmental risks in the manufacturing proc

发表于:2018-12-08 / 阅读(162) / 评论(0) 分类 VOA标准英语2014年(六月)

Recycling Plastics When plastic containers are recycled, they are first cleaned, then ground into tiny pellets and put into a flotation tank. This separates out the various plastic resins from other waste material. Once they are separated out, the pl

发表于:2018-12-27 / 阅读(142) / 评论(0) 分类 英语时差8,16

DAVID GREENE, HOST: Families across the United States are fighting with the federal government over a deadly chemical. Dozens of people have died from inhaling methylene chloride. This is an ingredient in common paint removers. NPR's Rebecca Hersher

发表于:2019-01-17 / 阅读(160) / 评论(0) 分类 2018年NPR美国国家公共电台11月

Every winter some twenty million tons of salt are dumped on America's road.That sodium chloride melts the ice, so it prevents its formatin, helping to prevent accidents. But road salt has its downside. This is not very economical because salt is main

发表于:2019-01-20 / 阅读(216) / 评论(0) 分类 2016年Scientific American(一)月

This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway

发表于:2019-01-22 / 阅读(155) / 评论(0) 分类 自然百科2009年

Tony: Who did you invite over for dinner Saturday? Carmela: I invited Keith, Sung, Stephanie, and Luis. Tony: You didnt! Carmela: I did. Why? Tony: Youre going to have a hard time cooking for them. Keith is a vegan and only eats food thats organic. S

发表于:2019-02-04 / 阅读(147) / 评论(0) 分类 地道美语播客

First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先,我对您说,海底有锌、铁、银、金等矿藏,开发并不是不可能的事。

发表于:2019-02-25 / 阅读(251) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
aberration rate
akhromeyev
almond-flavored
Alz
anathematical
answering-relay set
apathies
apurinic apyrimidinic site
astigmatic lenses
autechoscope
automatic block with coded track circuit
aviation-security
bassetti
bastard progressives
Bayesian decision model
bergins
biog
boundest
brave oneself
break in operation
capacity between wires
cell web
charigma
check motion
clay bit
conserving energy
crouper
Csikeria
d.a.k.
Dacrydium
digital right management
duck embryo vaccine
Dumfries and Galloway
equality of arms
ESOC
estimated percent uncollectible
fake host communication
flywheel pilot flange
force-feedback gauge
fuel distribution box
gear shift lever ball
granatanine
gregarious
ground friction and resistance
hi-hats
homoplasts
humanistic medicine
imperial examinations
ineludibly
intermediate shaft bearing sleeve
leathes
lens-fronted tubing
Lerouville
microassault
Milagres
moistening dryness for removing phlegm
molal surface
Mollerin, L.
move in
muddie
multielectrode valve
noggin
octree
oek
Otopexy
pantlessness
parcel ticket
phthalic ester
physical application
Pregradnaya
protriaene
Put that in your pipe and smoke
rebaked
resistance to fouling
Ritchey-Chretien system
roches moutonnee
rodent-like
scotcheon
shaker digger
silky wisterias
softsynths
sparking phenomenon
spineal
SSMI
steropes
strippable deposit
subjectification
subkiloton
suprarenal gland
sweetened non-fat condensed milk
Taxillus sutchuenensis
Taylor wave
telkalakh (tall kalakh)
tempting
test translator
Tongala
Træna
ultra-sharp sense
unvoicings
water immersion test
your heart's desire
zhejiang province