熔融氟化物燃料

发表于:2018-11-27 / 阅读(214) / 评论(0) 分类 英语口语1+1

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(115) / 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(86) / 评论(0) 分类 科技之光

Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa

发表于:2018-12-07 / 阅读(117) / 评论(0) 分类 VOA2003(上)-科技导航

What country has more historically active volcanoes than any other? 历史上哪个国家活火山最多? United States, Indonesia, Japan or Philippines? 美国、印尼、日本还是菲律宾? According to the U.S. Geological Survey, there are more

发表于:2018-12-20 / 阅读(65) / 评论(0) 分类 CNN美国有线新闻2018年5月

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(115) / 评论(0) 分类 口腔临床英语对话

Called the hellhole of creation, the Afar Triangle lies at the junction of three continental plates which spread further each year. The oldest living lava lake and one of the lowest points on the planet. Geologists here can study the process that for

发表于:2018-12-30 / 阅读(171) / 评论(0) 分类 国家地理2007年

But despite the Mongol's attempts to master siege warfare, the Chinese were still much more advanced in their military technology. They responded by filling bombs with crude oil, molten metal, chemica

发表于:2019-01-02 / 阅读(85) / 评论(0) 分类 成吉思汗

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(95) / 评论(0) 分类 VOA标准英语2010年(十)月

研究显示太阳能发电站使用熔融金属可能造价更为低廉 While water circulates in this scale model of a concentrated solar power plant, a full-size plant uses molten salt. 水在这种规模的太阳能集中发电厂循环时,这座实

发表于:2019-01-14 / 阅读(73) / 评论(0) 分类 VOA标准英语2016年(三月)

Study: Running Sun Power Plant With Molten Metal May Be Cheaper 研究显示太阳电站运行或拉低熔融金属价格 Power plants that work with concentrated solar power use special molten salt to convert the suns heat into steam which turns the

发表于:2019-01-14 / 阅读(61) / 评论(0) 分类 VOA标准英语2016年(三月)

如果随便翻阅雅思阅读真题,我们常常会发现它涉及的词汇广度难度绝对不容小觑,甚至出现在GRE红宝书里的超强词汇也会频频亮相。于是,不少同学在初识雅思时都会产生畏难情绪,滋生出

发表于:2019-01-17 / 阅读(121) / 评论(0) 分类 实用英语

It's been five days since Hawaii's Kilauea volcano started erupting again, but a lot of the destruction is occurring miles from the mountain summit. This is all started Thursday on Hawaii's big island. Kilauea, which means both spewing and much sprea

发表于:2019-01-19 / 阅读(78) / 评论(0) 分类 CNN美国有线新闻2018年7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(84) / 评论(0) 分类 2018年科学美国人1月

We were left with this atmosphere made of molten rock and vaporous rock. It took millions of years for that atmosphere to fall out and to be replaced by an atmosphere made up of nitrogen and carbon dioxide and water vapour. These new gases came from

发表于:2019-01-23 / 阅读(66) / 评论(0) 分类 探索与发现2014年

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(102) / 评论(0) 分类 科技之光

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(89) / 评论(0) 分类 英语单词荟萃

Serious produce server Neser Balwich directs from the front seat while aerial cameraman Mike Calen controls the camera attached to the lows. Above 10,000 feet, the pilot must breathe oxygen through a passed tool beneath the nostrils. Approaching the

发表于:2019-02-15 / 阅读(126) / 评论(0) 分类 自然百科2012年

Like Mercury, the earth takes a beating from the sun's violent temper. Flares, sun storms and other solar hissy fits can cause electronic mayhem for the satellites that roam above our heads. Fortunately, the earth is protected from this radiation by

发表于:2019-02-15 / 阅读(193) / 评论(0) 分类 自然百科2012年

Taking a Volcanos Temperature 火山喷发(volcanic eruption)是一种奇特的地质现象,是地壳运动的一种表现形式,也是地球内部热能在地表的一种最强烈的显示。是岩浆等喷出物在短时间内从火山口向地

发表于:2019-02-24 / 阅读(60) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
.log
Acikaprin
after accommodation
air spoiler
arboreal epiphyte
bit class
book agents
cantilever gantry
carrier sense multiple access(csma)
case plank cracked
Chancaquero
Circanetten-new
cold short iron
Comitini
concave leaf
conglutinative complement adsorption test
cotransformations
coupling for the transmission of rotary motion
crowned roller path
crowston
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Dano Norwegian
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didjeridoos
eccentric factor
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electronic warfare support
Erlenmeyer
error file
Fab/ox
fair sheet
fetiparous
gas-turbine power plant
Gellams
geminated teeth
geography of fuel industry
Glauber's salt(s)
hand dresser's and sorter's bunch
heermann
hempen core
hot cathode arc ion source
IMP,imp
indefensibly
indian relapsing fever
irregular beading
itascas
macradenous
make sb pay
malappropriations
maternal mole
mediation responses
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multirate architecture
mycochaetophora japonica hara et ogawa
nerve end
nitrobenzyls
nutritional disorder
packed data
participatory design
paskar
Permira
pesudouridylic acid
phenoxy resin
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positive-grid multivibrator
postocular spot
PPAD
prognostician
Prudent-Person Rule
response shape
retrogradation
Ribako
safety education
salamandroidea
schumann-runge bands
shakerss
sight glass
sit loose
sod it
striplike
subderivatives
swaybar
Sǒn-gyo-dong
taiwan firecrest
target irradiation
Thalmann's agar
trimethyl-acetyl chloride
trophic signals
typhization
unbihexium
unhopefully
usalite
utaemon
water filler
Watkinson
working data base
writing of
you sick
your very own