分布反馈半导体激光器

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(145) / 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(129) / 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(140) / 评论(0) 分类 2017年VOA慢速英语(七)月

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(191) / 评论(0) 分类 2013年VOA慢速英语(五)月

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发表于:2019-01-17 / 阅读(318) / 评论(0) 分类 儿童英文广播剧在线听

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(165) / 评论(0) 分类 VOA常速英语2007年(十一月)

1) BBL = Be back later = 一会儿回来,一会儿再聊 2) BFF = best friend forever = 一辈子的好朋友 3) BF/GF = boyfriend/ girlfriend 男朋友/女朋友 4) BTW = by the way = 顺便说一下

发表于:2019-02-07 / 阅读(152) / 评论(0) 分类 OMG美语
学英语单词
a big one
abstinence theory
aerospray ionization
air hood
aircraft landing gross weight
Ajdir
apocynaceaes
application valve body
Archaic Latin
belly-tember
belt driving device
brown-sequard injection
bureau of economic research
buried soil horizon
carbon noise
cash against bill of lading
central circulating tube
channel conservancy
chronic catar rhal enteritis
convertible curency
Cooperia punctata
Cyclea tonkinensis
danieli
de-escalating
displeasedly
dorsoanterior
drag struts
drawsheets
drip down
drive-through penalty
economic court
eosnophilia
fine arts lessons
fissions
forecastful
foundation thaw collapse
fuel cycle
fully polynomial time approximation
gbd
genus Ruta
Gratz connection
guinea-bissau monetary units
hagiocracy
Highland pony
homologizing
hoof mark
introing
jelly blubber
job-huntings
kacha
laminae muscularis mucosae
lead of brush
lipped channel
little tree willow
livestock nutrition
lowe index
malarky
mass-to-power ratio
mcglashan
Microesthesia
microstructual examination
minimum operation
moving coil loud speaker
Naboth's follicles
night-nurse
O-linked
Oklahoman
Operculicarya
optical sighting
out-of-body experience
over all circuit routine test
packaging-childsafety
pancreatone
perorational
personal computer
pre emergence spray boom
pre-bookeds
psyc
reader for list structure
Shuckneckt's operation
similar to to-5 package
slurve
solid partition
sorted file
specular color
spot welding sealer
stop statement
Sunart, Loch
tanked
tetracyclin
torso presentation
trigonella foenumgraecums
unde-
varying voltage generator
Veitch sasa
warehousing technology
weld size
white grape
world champion
Xeranthemum annuum
Zatocoding
zurin