滴汞阴极

Project Mercury: The American Space Program Begins SHIRLEY GRIFFITH: EXPLORATIONS -- a program in Special English by the Voice of America. (SOUND) That announcement was made May fifth, nineteen sixty-one. It was the first manned flight of project Mer

发表于:2018-12-07 / 阅读(148) / 评论(0) 分类 2012年VOA慢速英语(七)月

Studies that will be released today show that fish, birds and mammals in New England have significant amounts of mercury in their bodies. The studies find the toxic metal in some unexpected habitats and they suggest that power plants in the Midwest a

发表于:2018-12-17 / 阅读(232) / 评论(0) 分类 2009年NPR美国国家公共电台7月

The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a

发表于:2018-12-19 / 阅读(152) / 评论(0) 分类 彭蒙惠英语

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(203) / 评论(0) 分类 60秒科学

HEALTH REPORT – December 11, 2002: Mercury Levels in Fish By George Grow This is the VOA Special English Health Report. Two studies are adding to the debate about the health risks of eating fish con

发表于:2019-01-07 / 阅读(151) / 评论(0) 分类 健康与环境

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(189) / 评论(0) 分类 Scientific American(四)月

VOICE ONE: EXPLORATIONS -- a program in Special English by the Voice of America. (SOUND) That announcement was made May fifth, nineteen sixty-one. It was the first manned flight of project Mercury. Today, Tony Riggs and Larry West tell about the beg

发表于:2019-01-11 / 阅读(173) / 评论(0) 分类 VOA慢速英语2009年(六)月

How the 'Mercury 13' Led the Way for Women in the US Space Program Im Steve Ember. And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about a program in the nineteen sixties to train women as astronauts. Today they are known

发表于:2019-01-12 / 阅读(123) / 评论(0) 分类 2013年VOA慢速英语(五)月

EXPLORATIONS - How the 'Mercury 13' Led the Way for Women in the US Space Program Im Steve Ember. And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about a program in the nineteen sixties to train women as astronauts. Today

发表于:2019-01-12 / 阅读(135) / 评论(0) 分类 2013年VOA慢速英语(四)月

AILSA CHANG, HOST: Later tonight at Europe's spaceport in French Guiana, a probe is scheduled to lift off. Its goal, as NPR's Joe Palca reports, is to explore the mysteries of Mercury. JOE PALCA, BYLINE: Mercury is a funny little planet. Like the Ear

发表于:2019-01-17 / 阅读(120) / 评论(0) 分类 2018年NPR美国国家公共电台10月

SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B

发表于:2019-01-30 / 阅读(275) / 评论(0) 分类 科技之光

The U.S. space agency(代理中介) has released the first ever image taken of the surface of Mercury from a spacecraft orbiting the planet. The black and white image, posted on the NASA website Tuesday, shows a surface pocked with craters of varying

发表于:2019-01-31 / 阅读(158) / 评论(0) 分类 英语新闻

The U.S. space agency NASAs Messenger probe(正直的,廉洁的 ) is scheduled to reach Mercury later this week, and become the first spacecraft to orbit the planet closest to the sun. During Messengers year-long orbital mission, scientists exp

发表于:2019-02-05 / 阅读(145) / 评论(0) 分类 英语新闻

The U.S. space probe MESSENGER is poised to enter orbit around Mercury(水银) early Friday, Universal time, capping a nearly seven-year journey to the solar systems innermost planet. Scientists with the U.S. space agency, NASA, hope the orbiting

发表于:2019-02-05 / 阅读(134) / 评论(0) 分类 英语新闻

今天我们要学的词是jaw-dropping。 Jaw-dropping, 令人惊讶的。 The seventh Harry Potter movie opened to a jaw-dropping $330 million in global ticket sales over the weekend, 《哈利-波特7》周末上映全球票房3.3亿美元,让人跌

发表于:2019-02-05 / 阅读(139) / 评论(0) 分类 英语每日一词

Ever wanted to be an astronaut? Imagine it was you, who was heading to the hot zone of the two inner planets, where would you go? What would you see? And how would you survive? The latest robotic machines have revealed more about these worlds than ev

发表于:2019-02-05 / 阅读(188) / 评论(0) 分类 自然百科2012年

By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-

发表于:2019-02-06 / 阅读(209) / 评论(0) 分类 VOA常速英语2008年(二月)

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(271) / 评论(0) 分类 自然百科2012年

今天我们要学的词是jaw-dropping。 Jaw-dropping, 令人惊讶的。 The seventh Harry Potter movie opened to a jaw-dropping $330 million in global ticket sales over the weekend, 《哈利-波特7》周末上映全球票房3.3亿美元,让人跌

发表于:2019-02-18 / 阅读(158) / 评论(0) 分类 英语单词荟萃

歌曲 : Apologies 艺人 :Dropping Daylight 音乐星级 : ★★★★ 所属专辑 :Brace Yourself 发行年代 :2006 风格 :Pop Rock 相关介绍 :关于Dropping Daylight,在网络基本没有他们的资料,只知道是个年轻的乐队,歌曲都很有活力的感觉,散发着青春的气息,正如

发表于:2019-02-20 / 阅读(130) / 评论(0) 分类 英文摇滚歌曲
学英语单词
Adametic
adsl transceiver unit-remote terminal end
alluss
aluminum acetotartrate
alveolar disk
amberoid
angioneuro-oedema
anticomplementary factor
arapahite
backward-wave tube amplifier
Bamberger's hematogenic albuminuria
be crowded with
be queer in one's garret
blown-out concrete
breezer
bromocresol green
camshaft sleeve
center of pressure travel
chopped chopping
cistern type water heater
classroom interaction
computer-oriented code
core making
deformation mountain
diethylcapramide
Doufouli
drilling engineer
dumping you
duty-cylce rating
Dyaus
eighty-nine
electronic media
elementary body
excitation capacity
explicit reservation
ezlopitant
ferro-cement construction
first countable topological space
frame flyback
frond-
gear testing apparatus
geewhillikins
genus Tunga
get one leg over the traces
glory fern
golden moles
hand-
house dust mite
hydropleuritis
imitrexes
inha
instrumenta cibaria libera
international geosphere biosphere program
land-bank
leglen
Lochotyphoid
Lost R.
lube oil hydrogenation
manganese(ii) oxide
maritime convention act 1911
method of abstract analysis
method of successive corrections
milled nut
muchalka
Mukia maderaspatana
Mukubu
N factors
Namyla Chaung
nucleon-nucleon collision
optically oriented clay of filmy form
optimum water content
organomagnesium compound
osseous rheumatism
over-commitment
p-type conduction
panesthia angustipennis spadica
physiognomical
pilitzer
preplannings
Primula bracteata
radio wave characteristics
rancheria
random error
recohere
refuse coal
relieving wall
Robinson's abdominal brain
rzz
send down
shuttle-pin
side-lap weld
slow bubble model
tanadem board
the fact that
three-points
Turning-place
um'h
untreated coil
vallo
VEPA
weekly
weltfish