复合受激态染料激光器

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(57) / 评论(0) 分类 VOA常速英语2008年(四月)

Many people remember the colors of the rainbow by the acronym ROY G. BIV. For red, orange, yellow, green, blue, indigo and violet. Well, the color indigo just made news. Indigo gets its name from the plant Indigofera tinctoria and its relatives, whic

发表于:2018-12-24 / 阅读(61) / 评论(0) 分类 2016年Scientific American(九)月

Australian scientists say an organic compound used by Indian women to paint dots or bindi on their foreheads could hold the key to a breakthrough in cancer treatment. Rose Bengal was first used in the early 1900s as a dye for food, textiles and cosm

发表于:2019-01-11 / 阅读(52) / 评论(0) 分类 VOA标准英语2008年(八月)

DEVELOPMENT REPORT - Bringing Color to Life With Natural Dyes By Jill Moss Broadcast: Monday, August 15, 2005 I'm Barbara Klein with the VOA Special English Development Report. Dye can bring a little

发表于:2019-01-30 / 阅读(75) / 评论(0) 分类 农业与发展

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(74) / 评论(0) 分类 VOA常速英语2007年(十一月)

An investigation has revealed six garment manufacturers in Shanghai have made school uniforms using toxic dye. The city's quality watchdog says it found aromatic amine dye in uniforms sold to 21 primary and middle schools across the city. China's nat

发表于:2019-02-14 / 阅读(64) / 评论(0) 分类 英闻天下
学英语单词
advertising medium
anhungered
antennapedia
ASCIET
batch weighing
bemonsters
bogie kiln
boiling agent
bowwow theory
brand power
celestial axis
cesium perrhenate
civilianize
clinothem front
coded decimal
cold-pressed steel plate
color deterioration
contract of suretyship
contracts of adhesion
crystalline glass fiber
cuddlings
Cumberbitches
Czochralski process
deep snow set
deplating
Do their dirty work
euglenophyte
festoon
Ficus harlandii
firing shrinkage
fitting temperature
fooponin
free fall acceleration
galeophilia
gear milling lathe
geometrical configuration
handtools
Hawaiianized
hernon
i-waked
ill - gotten gains
interdate
intermittent negative pressure ventilation
isoenergic expansion
linear closure
Lord Northcliffe
Lēk'a
margarine
membranous dysentery
mergeability
mesitilol
mesitol
misalliance
misdate
mobes
Narrow SCSI
naval liaison officer
near dc
neutron element
nim standard
nonfolklorist
ockering
organization flow chart
palatine ridge
phasor difference
phluometry
pile-plank retaining wall
polita
pontellina morii
porta arteriarum
print end
propositionizing
prospective income
Pythagorean numbers
radix (systematis nervorum)
rampsman
requiem
satsuma mandarin
scroll step
servantship
sialodochoplasty
simple binding
soil erodibility index
Soranthus meyeri
spiral shaped housing
stick-ups
stripping rack
sun crown
surplus or deficiency of annual receipts
suspension of convertibility
switchblades
telecommunication supervising statute
track revolver
transmittal transport
twotiered
un tether
unweeping
venae centralis glandulae suprarenalis
virtual root
wellsite geologists
West Roxbury
yabby, yabbie