氯化锇

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(157) / 评论(0) 分类 VOA标准英语2014年(六月)

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(155) / 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(210) / 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(148) / 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(143) / 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(245) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
2-amino-1-3-propanediol
absorption refrigerating system
acceleration clause
Albert,Lake
alexander's disease
aligning gear
anourn
arteria alveolariss
assaie
auto de fe
back-to-back credit export first
basic-cable
below-normal
bespeckle
bird dogging
bond collateral loans
carpet sweeper
cathode compensation
chitosomes
cisted
coke number
common hinged window
contactsubstance
Corydalis diffusa
devility
direct metal mask
dribble out of
dup control code
duplex sheeting
echo eliminator
edge growth
ejector air pump
electrical conduit
endometrial cancer
epicycloids
Faber's anemia
feminized
fetishistic language
fifther
flashes back
flat-top
flickering
gauge transformation
gaver
going-concern value
high-wearing feature
hypertext transfer protocols
inexact analysis of risk
insulation thermal life
intensive culture
jmt
Kisisi
line inspector
linear chelatropic reaction
low contrast
metallo organic chemical vapor deposition
microvariability
midpoint crossing
midrash
moothills
Mt. M.T
Navy Tactical Data System
nestle-cock
noise cancelling mic
nonalien
nuns
oce edit code
paid it forward
Panretin
parablepsis
pegmatophyric
Pennsylvania Dutches
peroxyacetyl
perplection
phosphorescence afterglow
photofinishers
pilosomycin
plough steel wire
premodifies
principle of personal jurisdiction
pronouncements
red-short steel
rod handling equipment
sakson
sandwichmen
self-energed brake
sharp spoon
silent point
skillern
Smyrniote
SSAA
steam-heated concentrator
steaming with salt-water
stowing machine
supported end
synclinal strata(synclinal stratum)
tert.-amylbenzene
Tucker's spray
turpis personae
weighting characteristic
Wohlfahrtia
xenon build up after shut-down