聚焦激光多普勒测速计

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(129) / 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(113) / 评论(0) 分类 2013年VOA慢速英语(二)月

New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl

发表于:2018-12-16 / 阅读(98) / 评论(0) 分类 VOA标准英语2014年(二月)

IV. Speaking Out Focusing Attention Model 1 As far as Im concerned,

发表于:2018-12-29 / 阅读(110) / 评论(0) 分类 新视野大学英语:视听说教程 1

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(125) / 评论(0) 分类 2017年VOA慢速英语(七)月

You may just need help relating to your parents or you mainly talk to them something difficult. By the way,read on. Here's how: 1.Find time that you and your parents can be comfortable and relaxed together. 2.Make sure no one is focusing on something

发表于:2019-01-06 / 阅读(134) / 评论(0) 分类 实用英语

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(191) / 评论(0) 分类 2005年NPR美国国家公共电台

超声成像 ultrasonic imaging 实时成像 real-time imaging 灰阶显示 gray scale display 彩阶显示 color scale display 经颅多普勒 transcranial doppler 彩色多普勒血流显像 color doppler flow imaging 彩色血流造影 color flow

发表于:2019-01-08 / 阅读(144) / 评论(0) 分类 医学英语

AS IT IS 2013-08-19 Survival Shelters, Tornadoes and Old Ironsides 生存避难所,龙卷风和老铁壁 Hello, and welcome to the Monday edition of As It Is, our daily show for people learning everyday American English. 大家好,欢迎大家收听周

发表于:2019-01-12 / 阅读(121) / 评论(0) 分类 2013年VOA慢速英语(八)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(173) / 评论(0) 分类 2013年VOA慢速英语(五)月

AS IT IS 2013-09-11 Rising Temperatures Could Mean More Wildfires 不断上升的气温可能会意味着更多的森林大火 From VOA Learning English, welcome to As It Is! Im Mario Ritter. On our show today, we hear from two weather experts. We he

发表于:2019-01-12 / 阅读(250) / 评论(0) 分类 2013年VOA慢速英语(九)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(142) / 评论(0) 分类 2012年VOA慢速英语(一)月

The report is meant to provide suggestions for Chinese central authorities putting together the 13th five-year plan. One of the over-riding themes in the research report is how to keep China's economy moving under the New Normal. This is the term bei

发表于:2019-01-20 / 阅读(108) / 评论(0) 分类 英语新闻

生活大爆炸第一季第六集_1:The Middle Earth Paradigm -Rajesh: Okay, if no one else will say I will. We really suck at paintball. 好吧,如果没人说那就我来说。我们在彩弹比赛中的表现实在太差了! -Howard: That wa

发表于:2019-01-28 / 阅读(227) / 评论(0) 分类 生活大爆炸第一季

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(146) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Jessica Berman Washington 20 September 2007 Scientists say they have evidence that a ferocious dinosaur made famous by the movie Jurassic Park definitely had feathers. Experts say the dinosaur, called Velociraptor, had a wing structure just like m

发表于:2019-02-06 / 阅读(155) / 评论(0) 分类 2007年VOA标准英语(九月)

也许你在开始正式工作之前,总会花很多的时间列清单、回邮件、接电话、整理书桌、反复整理本已很有条理的文件夹,最后发现那些被推迟的、有挑战的工作都没有做。这时候,你需要一个

发表于:2019-02-07 / 阅读(200) / 评论(0) 分类 阅读空间

How to Survive in this Crazy World Life is full of pressure. Worries about your health, terrorist threats on the news, financial troubles, conflicts at work and family concerns. Without a center in your life, those pressures are likely to push you ar

发表于:2019-02-09 / 阅读(108) / 评论(0) 分类 阅读空间

Doppler on Wheels Rolls Into Tornados Doppler radar reads the weather based on reflections from items moving through the air. Joshua Wurman was the first to put the technology on wheels and drive it directly into the path of a tornado. I invented Dop

发表于:2019-02-17 / 阅读(179) / 评论(0) 分类 VOA常速英语2013年(八月)

You're Ravenous 变得贪吃 If you find yourself hungry all day (and not because you skipped breakfast or have recently amped up your gym routine) it might be because you've been skimping on sleep. 如果你发现自己特别容易饿(不是因为你

发表于:2019-02-17 / 阅读(107) / 评论(0) 分类 阅读空间
学英语单词
-organized
a-bolt
abortion ratio
abu mombasi (abumombazi)
Alan Hodgkin
alive to
alveolarisation
arteriosclerotic cardiopathy
as dry as sawdust
audio-aid
binary coder
body assistance
bonnevilles
box wagon
cable-layings
carex breviculmis r. br. var. royleana kuek.
centrifugences
clearance loss
close coupled rudder
combined sine-wave signal
cooling circulating water
crawling peg
cytotrophoblasts
dickin' ya
dielectric dissipation
diphenylhexatrienes
Donskoy
doppelbocks
draw bar pull dynamometer
dyed shirting
eight-colour printing machine
embarkee
emergency alert
eprix
feline infectious peritonitis
finishing-roll
fore-reef complex
free burning
guaranteed scheduling
hartridge smoke unit
horizontal hand resaw
hoswell
ingine
isochromatic property
isotope lamp
issac
jam filler
jaups
Jiaqing
kandels
Kashiwa
laypeoples
line test trunk
linear coupler
link access attribute
load force
Lysimachia pittosporoides
marsh pinks
mkg
Moutohora I.
mucodermal
municipal tax
myeloarchitecturally
narmer
nonrepulsive
nonsyntaxins
operating threshold
operational chart
outskating
part timer
Pipola
pitch arc
premultiplier
production loss
programmed roll
Protogenea
pullow
radiation signs
radio navigational warning
really something
salariats
schaebers
see someone further
settling area
single V-groove
solid fission products
straight gyrus
succedane
supercritical steam pressure
tetraisopropylbenzene
unit's order
unphysicked
unstable inverse filter
unwitch
value axis
vena striata
vouched for
walkaround money
warehouse operation
warrander
wedge lines
wilmore