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(141) / 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(227) / 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(145) / 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(132) / 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(166) / 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(196) / 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(196) / 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(144) / 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(159) / 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(117) / 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(132) / 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(114) / 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(161) / 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(272) / 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(155) / 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(140) / 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(132) / 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(182) / 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(206) / 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(263) / 评论(0) 分类 自然百科2012年
学英语单词
acid-commbining power
ACSV
Aeluropus pungens
air-conditioning machinery
all-round looking radar
allowed claim
angular spacing
Asembo
automatic cation exchange unit
Bayesian command and control system
birthday
bypass resistor
cationic fixed site
Chalaua
Chinese pumpkin
Coffs Harbour
compart
compound morphologies
coordinating element
coronary ligaments of knee
day-lewis
debt due
drum cutter
engineering sample
enteric cavity
Etive, Loch
event planning
exposed ways
external instrumentation
fabula
fenetradil
Flack test of physical efficiency
fly-boy
furnace refractories
fusiform gyruses
gemmating
gray hats
Gren.
Halcut
head cabbage plant
heat-sensitive sensor
heteropleural transplantation
hobor
Hooper's pills
hydrotellurates
input/output format
IWIU
john websters
La Guayra
laser grooving
letterss of marque
leyland-dafs
mahmut
male fern oil
manufacturing engineer
MeGill alloy
metallurgical calculation
minoff
moisture resistant grade
myoglobin concentration
n-types
Nertera
Pandrān
paradoxornithid
part work part study
phase orbit
phisician
phytomyza takasagoensis
ploughs on
potato separator
PQFP
quotas administered
rajm
relatively stable groundmass
sclerotinia fructigena
section space reed
secular disequillibrium
semi-voiced
Seseli
shank-nag
side arm controller
sightman
soap-maker
soja bean glue
solid zoning
ssstsasrsts-s
ST_chance-and-possibility_good-luck-and-bad-luck
strategy analysis
stress index
structural interpretation
suborder Percoidea
temperature contour
the Peter Principle
Tiantu
trow
tuberculostat-6
Tup'o-ri
Wassermann reagin
wheelback
whitcomb
working area
yowr