比率成像技术

By Melinda Smith Washington 30 March 2007 Since the mid-20th century the World Health Organization reports there has been an increase in the rate of breast cancer among women in developed countries. For decades, doctors have urged their patients to d

发表于:2018-12-16 / 阅读(220) / 评论(0) 分类 2007年VOA标准英语(三月)

Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li

发表于:2018-12-24 / 阅读(178) / 评论(0) 分类 Scientific American(二)月

[00:01.17] 5.Did The Earth Move For You? [00:04.65]Eleven-year-old Angela was stricken with a debilitating disease involving her nervous system. [00:10.54]She was unable to walk and her movement was restricted in other ways as well. [00:15.98]The doc

发表于:2018-12-26 / 阅读(104) / 评论(0) 分类 温馨夜读II

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 60秒科学

图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t

发表于:2019-01-02 / 阅读(252) / 评论(0) 分类 数学英语

图片1 图片2 by Jason Marshall Despite many peoples assumption to the contrary, math is undeniably artistic. It takes a tremendous amount of creative muscle and artistry to devise mathematical solutions. And, as made evident by their frequent batt

发表于:2019-01-02 / 阅读(285) / 评论(0) 分类 数学英语

If you are like many language students, you might have a problem with procrastination. Perhaps you are slow to do homework or study for a test. Maybe you do not like to study or you become distracted while studying. Whatever the case may be, learning

发表于:2019-01-02 / 阅读(460) / 评论(0) 分类 2017年VOA慢速英语(六)月

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-08 / 阅读(152) / 评论(0) 分类 Scientific American(六)月

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(152) / 评论(0) 分类 医学英语

Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver

发表于:2019-01-11 / 阅读(219) / 评论(0) 分类 英汉幽默故事选读

By Carol Pearson Washington 08 January 2008 New technology makes surgery safer, shortens recovery time and leaves no scars. Both physicians and patients are pleased with the results. VOA's Carol Pearson has more. Maria Viruet recently had her gallbla

发表于:2019-01-31 / 阅读(174) / 评论(0) 分类 VOA标准英语2008年(一月)

Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver handle the situation, we wondered. Straight-faced,

发表于:2019-02-03 / 阅读(155) / 评论(0) 分类 趣味英语

By Chris Mitchell Washington, DC 06 April 2006 watch Medical Imaging report Medical experts have defended medical imaging as a way to improve health care, during a briefing at the U.S. Capitol buildin

发表于:2019-02-03 / 阅读(194) / 评论(0) 分类 2006年VOA标准英语(四月)

BEIJING, May 13 (Xinhuanet) - China's central bank announced on Saturday it would lower the reserve requirement for commercial lenders by 50 basis points, the second time it has taken such action this year to inject more market liquidity and shore up

发表于:2019-02-04 / 阅读(180) / 评论(0) 分类 英语新闻

BEIJING, May 24 (Xinhuanet) -- CT scan, a widely used heart-imaging test, is likely to result in the over treatment for patients with heart disease, according to a study published online by the Archives of Internal Medicine on Monday. CT, which produ

发表于:2019-02-06 / 阅读(126) / 评论(0) 分类 英语新闻

China's sex ratio is quite worrying nowadays. According to census data, China's sex ratio at birth was 108 males to every 100 females in the early 1980s, only slightly above the natural rate of 103 to 107. In 2000 the ratio was 116.9 males to 100 fem

发表于:2019-02-14 / 阅读(169) / 评论(0) 分类 英闻天下

BEIJING, Nov. 30 (Xinhuanet) -- Heading football frequently may cause brain damage leading to subtle but serious declines in thinking and coordination skills, a new study suggested as quoted by media reports Wednesday. Researchers used an advanced MR

发表于:2019-02-16 / 阅读(118) / 评论(0) 分类 英语新闻

Afghanistan has become the first country to map its natural mineral resources using an advanced remote sensing technique known as hyperspectral imaging. The mapping, a collaborative effort between the U.S. Geological Survey and the Afghan Geological

发表于:2019-02-18 / 阅读(223) / 评论(0) 分类 英语新闻

知识点讲解: 1、中文意思一样 insist persist 2、两个词长得像 special specialty 3、长得像+中文意思一样 technique technology ① Technique 方法、技巧 Hes a great basketball player. He has flawless technique. 他是位很

发表于:2019-02-21 / 阅读(134) / 评论(0) 分类 每天三分钟学英语

近日,我国首颗商用遥感卫星成功发射。这颗备受瞩目的星星都具备哪些功能?它的升空具有什么意义?在实现人们飞天梦的同时,它又能为我们的生活带来怎样的便利呢? 请看相关报道:

发表于:2019-03-11 / 阅读(194) / 评论(0) 分类 英文语法词汇
学英语单词
.class
achean
actinogram(roentgenogram)
activity programme
alkaliosis
Allmannsweiler
ammonium cobaltous sulfate
anhalts
antibiotic resistance gene
auction company
auxo-amylase
batch pickling
bear a low sail
beta sites
billy-buttons
block circuit
bovial
brianyoungite
channel request
CNA
come to light
comparative feeding experiment
complete-mix
cryptic satellite
cuddle
culture yeast
direct transaction
dune fixation afforestation
elastic strength pressure
electrical goniometer
epoxy spray coating machine
Eriocaulon sclerophyllum
ethyl borate
Fargesia concinna
final coating cement
frequency device
fromias
glory-of-the-sun
grain refning
grayish browns
gyri cinguli isthmus
hyden
ill-conditioneds
inter-blocks
isoamyl benzoate
John I.
lagetto
laicised
lens detector cell
line up the board
lz compression
maroil
Mass bells
matte fall
mimosaceous
misacting
neurosis due to fright
Niederfeuilen
nonpsychotics
notched spike
off-flavour
on-axis
one-night-stands
one-ring
outpolls
parallel radio tap
perpetuates
perspective model
phaseic
platano
poaching engine
poles-apart
private message switch
program offering
prostatic neurasthenia
pukings
quality of note
queite
railbed
rami communicante
repullulates
Rezekne
rhinomucormycosis
schnozs
scintillation spectrometry
self-adorings
senior managing director
slators
spinnbar
Sulcus lunatus
supreme end
symphorophilia
symphystic
teamies
the model of half-experience and half-theory
the position
tube diameter expansion
two-revolution printing machine
unique document number
user subsystem
volontiers
within spitting distance of