热解程序;裂解程序

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

By Jim Malone Washington 25 October 2007 The lengthy and complicated process of choosing the next president of the United States begins in early January when voters attend party caucuses and cast ballots in primaries to select the presidential nomine

发表于:2019-01-07 / 阅读(71) / 评论(0) 分类 2007年VOA常速英语(十月)

By Jim Teeple Jerusalem 17 December 2007 After seven years, Israeli and Palestinian negotiators are talking once again. That development came at the end of 2007, a year of turmoil and transition which saw the Palestinian territories split, politicall

发表于:2019-01-07 / 阅读(101) / 评论(0) 分类 VOA常速英语2007年(十二月)

By Naomi Schwarz Dakar 21 December 2007 Rebels and government troops in Ivory Coast are set to begin the long-awaited disarmament process on Saturday, a critical first step before forming a new national army is the divided country. Ivory Coast Presid

发表于:2019-01-07 / 阅读(90) / 评论(0) 分类 VOA常速英语2007年(十二月)

A man enters a barbershop for a shave. While the barber is foaming(涂上泡沫) him up, he mentions the problems he has getting a close shave around the cheeks. I have just the thing, says the barber, taking a small wooden ball from a nearby dra

发表于:2019-02-08 / 阅读(75) / 评论(0) 分类 趣味英语

By Challiss McDonough Cairo 11 March 2008 Many Arabs say recent violence in Gaza and Israel is placing the Middle East peace process in jeopardy again. VOA Middle East Correspondent Challiss McDonough reports from Cairo the process is under review ah

发表于:2019-02-08 / 阅读(73) / 评论(0) 分类 VOA标准英语2008年(三月)
学英语单词
abampere
Acanthocheilonema perstan
affixing
agent participles
alveopora japonica
antimony ion
apoplectic anthrax
apparentness
auto drafting
axofugal
azolla carolinianas
Ban Doun
borasco
bornheimer
Brulon
buzzer relay
candidiasis
clasp survey
Cleistogenes hackelii
code control system
code division multiple access(cdma)
complete date
corpseless
Correra's line
cosanic acids
crotch veneer Y
cytobiological
datarecorder
daylight colour
difficult of accomplishment
dimensional stress
disaster radiation monitoring
dpf
end plate hanging hook
endplays
experimental nucleonics
fast-twitch musle fiber
feel out of things
forenoon
gag rules
Galveston Island
glycogenic infiltration
grammatist
ground water protection
hair-powder
homoseryl
iglite
illocutionaries
instantaneous cooling rate
Kantens
kasasa
Khabr
lavender flower oil
line format print data set
manoeuvers
MBR-O (memory buffer register,odd)
median lamellae
Montejinnie
nickel-chrome
noreast
one-quintillionths
optical sectioning microscopy
osseous hydatid
perns
photoemissive camera tube
physiologic icterus
physiologic space
pietrasanta
positive information sequence
potential-difference
proglottids
protection of functional group
Psicosan
reference pressure
refilling of oil tank
refraticory
right-justified tab
rotation of the greatest volume
sandblasting abrasive
scan of channels
sea scarp
shunde
slagmac
special orders
stretchy nylon
sue to sb
tapered mount
thalipine
transformer impedance drop
transonic test section
transportation
twenty-niner
ultra portable
undefinitions
unshowy
urban centers
vaginoscopies
woorye
working atmosphere
wretchless
yellow bean