[电] 激光幅射探测器

By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca

发表于:2018-12-08 / 阅读(132) / 评论(0) 分类 VOA常速英语2008年(四月)

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(119) / 评论(0) 分类 2013年VOA慢速英语(二)月

AS IT IS 2014-08-02 Americans Test Seawater for Fukushima Radiation 美国欲测试福岛辐射值 It has been more than three years since the nuclear accident at the Fukushima power station in Japan. Millions of liters of radioactive cooling water f

发表于:2018-12-16 / 阅读(98) / 评论(0) 分类 2014年VOA慢速英语(八)月

But I needed something else. I needed something to go that extra mile, and I found it in that metaphor which I had learned from my mother when I was four. 但是我需要另外一些东西,我需要增加我的旅程,我在意象中找到了它,那

发表于:2018-12-19 / 阅读(131) / 评论(0) 分类 TED演讲教育篇

Sometimes it is hard to see the light, especially it lies in the invisible spectrum, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of

发表于:2018-12-24 / 阅读(117) / 评论(0) 分类 2015年Scientific American(一)月

It might be the cheeks flushing with embarrassment or a voice choking with emotion. Our physical reactions can reveal what we truly feel. And some think they can show when someone's lying. Typically when a person tells a lie, they begin to sweat. I'

发表于:2018-12-30 / 阅读(218) / 评论(0) 分类 国家地理2008年

But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch

发表于:2019-01-02 / 阅读(168) / 评论(0) 分类 火星生命

The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network

发表于:2019-01-02 / 阅读(130) / 评论(0) 分类 2017年VOA慢速英语(七)月

This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke

发表于:2019-01-08 / 阅读(203) / 评论(0) 分类 2005年NPR美国国家公共电台

U.S. health experts monitoring Japan's nuclear crisis are seeking to explain health risks from radiation(放射) exposure, while cautioning that radiation levels measured this week at the Fukushima-Daiichi power plant in northern Japan have not y

发表于:2019-01-11 / 阅读(143) / 评论(0) 分类 英语新闻

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(177) / 评论(0) 分类 2013年VOA慢速英语(五)月

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one

发表于:2019-01-12 / 阅读(150) / 评论(0) 分类 2012年VOA慢速英语(一)月

AUDIE CORNISH, HOST: Each year, malaria kills about half a million people around the world. Health officials say a fast, cheap, accurate way to test for malarial infection would be extremely helpful in combating the disease. As NPR science correspond

发表于:2019-01-16 / 阅读(146) / 评论(0) 分类 2018年NPR美国国家公共电台5月

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(150) / 评论(0) 分类 VOA常速英语2007年(十一月)

Compared to the dose level of a medical chest x-ray, a backscatter scan is thousands of times lower. Since the Christmas Day attempted bombing of a U.S. airliner, airports are looking for ways to tighten security. One method being adopted by some and

发表于:2019-02-05 / 阅读(100) / 评论(0) 分类 VOA标准英语2010年(三月)

The World Health Organization (WHO) warns against the indiscriminate(任意的无差别的) use of potassium iodide as a precaution against nuclear radiation. WHO is issuing this advisory following reports of people in Japan and elsewhere who are usi

发表于:2019-02-06 / 阅读(281) / 评论(0) 分类 英语新闻

A key Japanese adviser on radiation(放射 ) leaks at the country's disabled Fukushima nuclear power facility has quit in protest over the government's handling of the disaster. The adviser, Toshiso Kosako, a radiation safety expert at the Univer

发表于:2019-02-06 / 阅读(139) / 评论(0) 分类 英语新闻

NEW DELHI, March 16 (Xinhua) -- The Indian government has ordered food originating from(发源于) Japan to be tested for radiation in the wake of explosions at a Japanese nuclear plant following a devastating earthquake-tsunami last Friday, repo

发表于:2019-02-07 / 阅读(125) / 评论(0) 分类 英语新闻

Public opinion polls suggest most Americans favor full body scanners as a way to protect against terror attacks on commercial airliners. The benefits of scanners are being debated in a number of countries. Some groups have raised privacy issues. But

发表于:2019-02-07 / 阅读(111) / 评论(0) 分类 VOA标准英语2010年(一月)

WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine(碘) has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai

发表于:2019-02-11 / 阅读(131) / 评论(0) 分类 英语新闻
学英语单词
accept persons
acoustic store
activated solids
air driven hydraulic jack
anesthsis
armour-platings
asymmetric cell division
baler plunger
bank credit and loan
binding energy per particle
blow-by-blows
botal blood volume
by the numbers
capillary analytical method
cast integral test bar
categories in reverse order
centroparietally
chamber music
chief compliance officer
chlormethine
Cold Dew wind
colloquialize
condenser welding
consolidation of lung tissue
cufic
curved dissecting forceps
cut end
D out
d-proline
data encapsulation
debris-laden stream
density of passenger traffic
echo altimeter
fillet radius
foran
forgenin
free flooding superstructure
general purpose optimizing compiler
gresleys
grid-tied
gross requirement
haematotoxicity
hand-held equipment
heavy-duty lathe
heterobiotin
high resolution computer graphic system
implementing rules
in-depth audit
installation management
internal auditors
intuitive criterion
jack fish
laminated beam
larderer
leucauge argentina
Lord Mayors
main hook approach to crane rail top
Marivaudage
meatsuits
molegrips
moltenslag
motion to revive the lapsed time period
noncensorship
Novi Travnik
orthoniobate
out-prosper
oxisuran
paramagnetic adiabatic demagnetization
piexe handling time
polycrates
potassium tetragermanate
price stiffened
Rabalan
radiation damage annealing
release pedal
remote command execution
robinas
russian leather
sale invoice
Sankt Leonhard am Forst
self propelled model
ship owner's statutary power
shock height
sidewash
single-canvas binder
single-chain type vertical elevator
skate over thin ice
small angle x-ray diffraction
soil-constant plant
spleen trabecula
Stampriet
stop signal element
submodality
tail rhymes
thtre
unhypochondriacous
v. phrenica inferior
venice international film festival
vintage show
warm-weathers
water ... down
yellow fish