汞灯

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(68) / 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(161) / 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(81) / 评论(0) 分类 彭蒙惠英语

原文: Program Host: Hi and welcome to our new show, Exotic Animal Kingdom, a program geared toward introducing animals to the young and old. In today's show, our young, but experienced, guest will introduce us to the fantastic world of bearded dr

发表于:2018-12-28 / 阅读(83) / 评论(0) 分类 听英文对话做选择

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 idiosyncrasy [ 7idiE5siNkrEsi ] One of

发表于:2018-12-30 / 阅读(92) / 评论(0) 分类 每日攻克5词

A stretch of road known as America's loneliest highway seems the perfect place to ignore the speed limit. But for those who slow down, Nevada's high desert reveals its unexpected side. Great Basin National Park is home to Lehman Caves. Lehman Caves w

发表于:2018-12-30 / 阅读(129) / 评论(0) 分类 国家地理2007年

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(143) / 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(66) / 评论(0) 分类 健康与环境

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(78) / 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(61) / 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(72) / 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(57) / 评论(0) 分类 2018年NPR美国国家公共电台10月

紧凑型荧光灯 Compact Fluorescent Lamp 金卤灯 metal halide/halogen lamp 溴钨灯 Bromine tungsten lamp 汞灯 mercury lamp 钠灯 Sodium lamp 卤钨灯 Halogen tungsten lamp 碘钨灯 iodine tungsten lamp 氖灯/霓虹灯 neon lamp 石英灯

发表于:2019-01-17 / 阅读(93) / 评论(0) 分类 实用英语

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(222) / 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(98) / 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(76) / 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(72) / 评论(0) 分类 英语新闻

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(129) / 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(130) / 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(189) / 评论(0) 分类 自然百科2012年
学英语单词
a dose
a matter of course
actual range
alkylglycerols
alveolar emphysema
antenna tuning indicator
arcus tarseus inferior
Arenaza
armature magnetic pole gap
arsensulvanite (arsenosulvanite)
arty and crafty, arty-(and-)crafty
as sure as I am a living man
ballet skirt
banking business
biotic area
bog star
bond papers
cambrain period
catharsis
cichoriin
cleaner chain
combined entity
contact numbers
continuous leaching
corrugated skin
cryogenic separation
cube texture
curling of flooring
current switching diode logic
data distribution panel
day-old chick
Delonte
descampe
digit computer
double jersey
electric cabinet bath
endodontically
Evil to him that evil thinks.
factory construction abroad
fail links
flanders poppies
fracture of capitellum
free hauled traffic
frenchified
goghs
Gooch filter
gross examination
group of regular polyhedrons
guavas
heterodyning
hoffmann electrometer
holothuroideas
hypnethesia
ID code
iddhi
in show
International PI Group Agreement
ironmake
jecorize
kapselcocus
laterobronchus
letter-word
lloyd's associates
metal marker tag
Mezhyrich
monosodium 5-allyl-5-isopropylbarbiturate
n-ary composition
natality statistics
needle guide
not more than one can help
NSC-38721
overcurrent test
paint sprayer
peripheral discharge ball mill
plant-like
polyauxotroph
pounch out
preset mask
pyrolyzate
quasiparticle tunneling
record-linkage studies
reprivatized
Rhamadan
Rockville Center
rubent
single screw propellor ship
sorcerer's apprentice mode
spark over test
spirochetosis riverensis
stay-in-school
subsulti
thromboarteritis purulenta
toothed-wheel shaping machine
torso
total technology
transparent glass ceramics
unformatted media
unsanitarinesses
Vila Franca de Xira
warshaws
writing-room
zade