[医] 氯化铯

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(99) / 评论(0) 分类 VOA标准英语2014年(六月)

[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon

发表于:2018-12-26 / 阅读(64) / 评论(0) 分类 美国英语听力80篇

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(八)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(89) / 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(139) / 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(100) / 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(90) / 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(167) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
accent speech-synthesizer card
almandines
analytic-synthetic distinction
arithmetic shift
auditopsychic
basic needs
Berlin blockade and airlift
big area
BN-52021
bolster suture
buddledin
CACATUIDAE
ceramic delay-line
channel allocation
chromasome
chronic actinic dermatitis
ciclonium bromide
coal sample crush
Coparvax
cories
corruscation
decodification
delphy
dieing
dudukahar
dumpties
federal housing administrations
fernandina
field supervisor
financing structure
free speech online
glomerulonephritic
glossopalatine glands
half cloth
halieutaea fitzsimonsi
harder's gland (or harderian gland)
hexagonal trapezohydral hemihedral class
high level programming language
high-temperature ceramics
Hoare logic
hyperbolic catenary
interrogation of a criminal
invalidship
joseph stalins
Lesser Sunda Is.
LH-RF(GRF)
lovansay
low pay
lystrosaurids
mckitterick
mean conditional information content
mega-hertz (mhz)
megabit store
monosterigmata
multiplier factor
negative discount
Nicotiana glutinosa
norths-to-south
off the road
Oocystaceae
Oreganza
osteomatosis
ouf
Oyouga
Pachyma
packed-fluidized bed
pentafluoropyridine
perpetual calendar watch
phanerogamic wood
pillaring back
possibility space
preneste
quincupedal
rag scrap
resultant vector
saccharum purificatum
saighs
scurvyweed
sedimentation force
see eye-to-eye
soil-testing
soloism
src (shutdown reactor cooling)
submanifolds
subsea work enclosure
supercools
tachinidaes
tan-e
Thatters
travel(l)ing self-service shop
triple-pole single throw
tulkus
unified file access system
unkink
unwedging
usurpingly
vacuous assertion
vosper
water tube hose
Weismann's ring
well-fought
Williams ixora