激光诱变育种

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(55) / 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(54) / 评论(0) 分类 2013年VOA慢速英语(二)月

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(62) / 评论(0) 分类 2017年VOA慢速英语(七)月

Scientists have identified a unique genetic mutation in about 10 percent of people with type 2 diabetes(糖尿病) studied in the United States and Europe. The discovery could help some people learn if they are at risk of developing diabetes so they

发表于:2019-01-11 / 阅读(86) / 评论(0) 分类 英语新闻

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(72) / 评论(0) 分类 VOA常速英语2007年(十一月)

The International Atomic Energy Agency is making a push for an unusual type of technology, using radiation to produce higher yielding and hardier plants. Lisa Bryant has more on the technology that the IAEA says could help reduce hunger affecting mi

发表于:2019-02-06 / 阅读(58) / 评论(0) 分类 VOA标准英语2008年(十二月)
学英语单词
acceptable material list
admission intake
air exhaust
alginic acid derivative
application component provider
arithmetic-logic
autorotations
Bersone
beta radiations
bringing
bust chops
cage contained stirrer
calomel cell
Canary Island hare's foot fern
carbon-arc-air process
clabber cheese
clamourer
colubraria nitidula
convective velocity
cross processing
current-voltage diagram
cymoid structure
detrital remanent magnetism
dioxosiloxane
diseases of liver-gallbladder
dot file
double elliptic spring
duyr
echoed
Ecuadorians
electrical engineerings
Euphyllinum
Exody
false-negatives
fatherings
fertile period
flyingdrum printer
foreman
fugl-meyer
galactosyl
generating compartment
gnophomyia (lipophleps) praedita
godinot
hormannsite
indicated air speed (ias)
individual ovules within an ovary
intrahemispheric
kakovatos
Kibambili
kolbe
laemodipodiform
Lammastide
leaners
leap about
lock-bay
May games
mc,mc.
meggings
metalizer
muddy flesh
music major
navigational duty
negotiation phase
Nordfjordeid
origins of dance
osteomyelitis of skull
paving design
polygonal domain
postsectarian
pouser
prefocus cap
presidenta
quasidifferentiable
rhombic hemihedral class
rhynchodipterids
rotation index
rushes through
s.e.r.e
safforn
self-trimmer
sidewall panels
slant resolution
slopeing
solacest
some time later
spatial parity conservation law
spider goat
statistic hypothesis
strap brake
sulphitian
sweatin
theory of servo-mecanism
thienchai
tightening screw
Tooradin
topdressing at different stages
velums
web ring
wide-boy
woste
yssewed