[化] 癸酰氯

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(60) / 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(59) / 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(107) / 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(64) / 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(55) / 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(119) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
a posteriori distribution
alternative check list method
anemone storonifera maxim.
angular displacement gyroscope
APPN
architectural lime
awkward squads
babes and sucklings
bar-point share
bassia toxlsperma
blast-winning technology
broad axe
bum's rush
cereal milk
change of address
clear all bookmarks
coaxial oscillator
constant of apsidal motion
de Hass-Van Alphen oscillation
deaminate
decimetric feeder
deformation of vertically aligned phase mode
direct access storage facilities
domestic-service
dosis-effect
double doffer condenser
double-curved flat shell
drum-type filter
dual-capacitor motor
epoxy ethylbenzene
everdeane
extinct element
family decline curve
feed rate override
fld
follow-up coil
foot rot of flax
French gray
gasoline shut-off
gawor
green-eyed monsters
guangzhouwan
hand type
have the rag on
heparine
high capacity water power station
high-temperature(-resistant) steel
hospital-based
immerman
Indon
inferior aberrant ductules
internal energies of bulk matter
iron grease cup
karst hydrogeology
khet
kwic (key-word-in context)
La Rochebeaucourt-et-Argentine
lespedeza striatas
long islands
macro code
mark-spaces
Masselon's spectacles
medicomi
methicans
nameplays
network closet
nitty
nonelectrochemical
nospark
offstood
optical fiber cavity
Oracle-type
pentagonon
perverse labor
prospecting seismic
putcheons
putrification
red puccoon
Rodney, C.
rogatio testium
role - playing game
scheerer
Scurrula notothixoides
shereks
side by side display
Smithsburg
spray plant
standardism
state forest economics
statoconium
stepless hull
subelliptical
synthetic fertilizer science
threshing floor
thymene
twin diode pentode
unlovable
vicissitudinary
virgin comb
walking disease
Waspaloy
weather radar system