氧二氟化铀(IV)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel

发表于:2018-12-02 / 阅读(234) / 评论(0) 分类 Scientific American(十二)月

07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the

发表于:2018-12-07 / 阅读(177) / 评论(0) 分类 科技之光

Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗? If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的,我想蛀了也没有关

发表于:2018-12-27 / 阅读(205) / 评论(0) 分类 口腔临床英语对话

86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson (Start at 1'02

发表于:2019-01-02 / 阅读(213) / 评论(0) 分类 科技之光

By Peter Heinlein United Nations 22 February 2007 The U.N. nuclear watchdog agency says Iran has failed to suspend uranium enrichment, in defiance of Security Council demands. From U.N. headquarters, VOA's Peter Heinlein reports the finding clears th

发表于:2019-01-12 / 阅读(169) / 评论(0) 分类 2007年VOA标准英语(二月)

By Mil Arcega Washington, D.C. 29 January 2007 watch Georgian Uranium report Georgian authorities have disclosed the arrest of a Russian man last year on charges of smuggling contraband uranium. Russian scientists confirmed the radioactive material

发表于:2019-01-13 / 阅读(211) / 评论(0) 分类 2007年VOA标准英语(一月)

Israel's Defense Minister Ehud Barak is calling for significant sanctions against Iran, saying it is clear the country wants to be a nuclear weapons power. Barak made the comments during a visit to Washington. Israel sees Iran as an existential threa

发表于:2019-01-13 / 阅读(175) / 评论(0) 分类 VOA标准英语2010年(二月)

Analysts Dispute Iran's Uranium-Enrichment Claims The international community has demanded that Iran fully acknowledge all of its nuclear related activities, and halt any work toward acquiring nuclear weapons. But Tehran has responded by announcing t

发表于:2019-01-14 / 阅读(153) / 评论(0) 分类 VOA标准英语2011年(六月)

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

发表于:2019-01-14 / 阅读(179) / 评论(0) 分类 VOA标准英语2010年(十)月

Ah yes.The ol' fluoride rinse at the dentist. Not pleasant. But hey, good for your teeth, right? 没错,这是牙医洗牙用的含氟漱口水。确实够闹心的。但毕竟对你的牙齿有益不是吗? Well now materials scientists have been

发表于:2019-01-20 / 阅读(189) / 评论(0) 分类 2018年科学美国人1月

By Nancy-Amelia Collins Sydney 07 September 2007 Russia has signed a deal to import Australian uranium for Russia's nuclear energy program. The two countries were quick to assure the world that the material would be used only for peacetime nuclear pu

发表于:2019-01-25 / 阅读(219) / 评论(0) 分类 2007年VOA标准英语(九月)

Beginners. Well, it's time for a new dog. For the past year, we have been a one dog family. But, you know, our dog, Rosie, is a wildly social lady. She goes crazy any time she meets another dog, a cat, a mouse, or a bird, let alone a human. But, the

发表于:2019-01-28 / 阅读(187) / 评论(0) 分类 英语博客 A cup of English

By Paula Wolfson Washington 17 December 2007 President Bush says now that Iran has received an initial shipment of nuclear fuel for its Bushehr power plant from Russia, there is no need for Tehran to enrich uranium. VOA White House Correspondent Paul

发表于:2019-01-28 / 阅读(191) / 评论(0) 分类 VOA常速英语2007年(十二月)

SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo

发表于:2019-01-30 / 阅读(180) / 评论(0) 分类 科技之光

By Marlene Smith After a week of delicate negotiations, the International Atomic Energy Agency's ruling body has adopted a resolution calling for Iran to suspend all uranium enrichment activities. The

发表于:2019-01-31 / 阅读(191) / 评论(0) 分类 VOA2004(下)--新闻盘点

今天我们要学的词是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美国政府50多年来首次降低饮用水建议添加的氟

发表于:2019-02-02 / 阅读(182) / 评论(0) 分类 英语单词荟萃

By Melinda Smith Washington 14 May 2007 Top executives of the company that makes a powerful painkiller called Oxycontin admitted this week they lied about the drug's addictive qualities in order to boost sales. As VOA's Melinda Smith reports, worldwi

发表于:2019-02-03 / 阅读(237) / 评论(0) 分类 2007年VOA标准英语(五月)

By Phil Mercer Sydney 15 August 2007 Australia has ended its ban on uranium sales to India. The country has so far refused to sell the nuclear fuel to countries that have not signed the nuclear Non-Proliferation Treaty, but Foreign Minister Alexander

发表于:2019-02-06 / 阅读(223) / 评论(0) 分类 2007年VOA标准英语(八月)

Beginners. Today, Foxy had an appointment with the vet for vaccinations and a general check-up. She is about eight months old, so she needed her second set of vaccinations. The vet also needed to see if her growth was normal and healthy. I put her in

发表于:2019-02-07 / 阅读(209) / 评论(0) 分类 英语博客 A cup of English

Iran says it needs uranium enriched to 20 percent to fuel a medical research reactor Elizabeth Arrott | Cairo 08 February 2010 Iranian President Mahmoud Ahmadinejad, wears eye protection goggles as he visits an exhibition of Iran's laser science, in

发表于:2019-02-12 / 阅读(225) / 评论(0) 分类 VOA标准英语2010年(二月)
学英语单词
absolute-reaction-rate theory
alphonsea mollis dunn
and even
apocrine sweat glands
Atherstone
atomweight
augmentative suffix
baldface
before anything else
bet ass
blunderful
botkins
brachy axis
Brain's reflex
bursin
Byrrhoidea
calcifiable
conga (cuba)
cork insulation
crapiness
cruise trade
diadynamic electrotherapy
double tube thermometer
dynamical system model
electric wind
electronics industries
encloud
endogenic force
ermenegildo
Erzincan
eutectic crystal
extracorticospinal
fair lead
fovea sphaerica
frictional resisting moment
Gamno-OH
garaeus apicata formosanus
Genoxal
gun for surface fire
hand-held color image scanners
homogeneous immersion
human justice
Hydroromeite
in-plant overall economic calculation system
indoleamine
intertextualizations
Islas Baleares
iso salines
Isopyrum biternatum
J-term
lead borate
Levantinian
Litsea elongata var. faberi
lochages
mepyrapone
minimum energy orbit
misresemblance
mitochondroma
Mobile Bank
MOF-STREP
multi-functions
multicolorate
muscien
neoepinephrine
Nokou
non-isometric line
overstimulates
Pedicularis daltonii
pencil edging
plane correction
polyethylene coated
polysarcia
principle of exclusion
pseudoscopic space image
put sb through his paces
quarantine flag
read someone's thoughts
restart command circuit
routing chart
rule-breakings
safety channel
sex polygamety
shmoosing
simple stationary gas producer
slipper skirt
socialist legal order
solvent re-treated extract
source linkage
square law voltmeter
stationary crusher
stone-
take a shot for
taken my name in vain
Therems
tiffney
Tomuzlovka
trametes cinnabarina(jacquin)fries
truck swing
underground aqueduct
Vittorio De Sica
voting slip
winnipeg