[电讯] 天线辐射阻抗

This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 Japan's nuclear crisis may mean greater demand for imported food and less competition from Japanese products on world markets. But it also means that

发表于:2018-12-07 / 阅读(108) / 评论(0) 分类 2011年VOA慢速英语(三)月

Doctors use X-rays to view internal organs, obtain clear images of possible disease and to treat cancer. For years radiation has been used to save lives, but there is growing concern that some patients are getting more than they ask for when they und

发表于:2018-12-08 / 阅读(140) / 评论(0) 分类 VOA标准英语2010年(一月)

This is the VOA Special English Health Report. The crisis at the damaged Fukushima Dai-Ichi Nuclear Power Station in northern Japan has raised worries about radiation risks. We spoke Tuesday with Jonathan Links, an expert in radiation health sciences

发表于:2018-12-16 / 阅读(117) / 评论(0) 分类 2011年VOA慢速英语(三)月

Researchers find circadian clock in Monarch's antenna plays a major role in navigation Shelley Schlender | Michoacn, Mexico 22 March 2010 Scientists believe antennas are critical to the navigation of the Monarch butterfly. Related Links Monarch Watch

发表于:2018-12-16 / 阅读(149) / 评论(0) 分类 VOA标准英语2010年(三月)

插座、插头和其它连接物(电器连接) Sockets, plugs and other contacts [electric connections] 插头、插座及其他接触器(电接头) Plugs, sockets and other contacts [electric connections] 表面覆有带电导体的玻璃 Glass

发表于:2018-12-18 / 阅读(134) / 评论(0) 分类 英文语法词汇

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Animals rely on all sorts of cues to find their next meal. Monkeys and birds are attracted to the colors of ripe fruits and berries. And snakes find thei

发表于:2018-12-24 / 阅读(138) / 评论(0) 分类 Scientific American(十)月

Brian didnt have cable TV. He didnt have satellite TV. He had an antenna for his TV. He had an indoor antenna. But it was an old antenna. The reception was bad. He needed to buy a new antenna. He went to Best Buy. The antennas were in boxes. He looke

发表于:2019-01-02 / 阅读(179) / 评论(0) 分类 简单慢速英语阅读

Brian didn't have cable TV. He didn't have satellite TV. He had an antenna for his TV. He had an indoor antenna. But it was an old antenna. The reception was bad. He needed to buy a new antenna. He went to Best Buy. The antennas were in boxes. He loo

发表于:2019-01-02 / 阅读(159) / 评论(0) 分类 原版英语小短文

Human exploration of Mars is now an official goal of the National Aeronautics and Space Administration (NASA). Last month, U.S. President Donald Trump signed a bill to increase NASAs budget. The law sets spending at $19.5 billion for the 12-month per

发表于:2019-01-02 / 阅读(126) / 评论(0) 分类 2017年VOA慢速英语(四)月

Earth Station - The term used to describe the combination of antenna, low-noise amplifier (LNA), down-converter, and receiver electronics that are used to receive a signal transmitted by a satellite.

发表于:2019-01-03 / 阅读(139) / 评论(0) 分类 电信英语

U.S. health experts monitoring Japan's nuclear crisis are seeking to explain health risks from radiation(放射) exposure, while cautioning that radiation levels measured this week at the Fukushima-Daiichi power plant in northern Japan have not y

发表于:2019-01-11 / 阅读(160) / 评论(0) 分类 英语新闻

DOUG JOHNSON: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Doug Johnson. FAITH LAPIDUS: And I'm Faith Lapidus. Today, we will tell about skin cancer. (MUSIC) DOUG JOHNSON: Skin cancer is one of the most common forms of cancer. It is also

发表于:2019-01-11 / 阅读(243) / 评论(0) 分类 2010年VOA慢速英语(七)月

Japanese Town Split by Radiation Evacuation Zone It is an extraordinary meeting of the Kawauchi village assembly. Because of severe damage to the village's municipal hall from the earthquake, the public gathering has been convened at a community cent

发表于:2019-01-13 / 阅读(132) / 评论(0) 分类 VOA标准英语2012年(三月)

Japan raised the severity of the Fukushima nuclear crisis from four to five on a seven-point scale of international nuclear events. Fears of radiation exposure has caused a run on salt products all across the region, including in China, where shopper

发表于:2019-01-14 / 阅读(160) / 评论(0) 分类 VOA标准英语2011年(三月)

(Probably Not a) Giant Alien Antenna强大的外星人光束 The Earth is studded with telescopes, listening for electromagnetic radiation from the great beyond. And a decade ago, astronomers stumbled upon a mysterious signal: a powerful pulse of rad

发表于:2019-01-20 / 阅读(175) / 评论(0) 分类 2017年Scientific American(三)月

The World Health Organization (WHO) warns against the indiscriminate(任意的无差别的) use of potassium iodide as a precaution against nuclear radiation. WHO is issuing this advisory following reports of people in Japan and elsewhere who are usi

发表于:2019-02-06 / 阅读(294) / 评论(0) 分类 英语新闻

A key Japanese adviser on radiation(放射 ) leaks at the country's disabled Fukushima nuclear power facility has quit in protest over the government's handling of the disaster. The adviser, Toshiso Kosako, a radiation safety expert at the Univer

发表于:2019-02-06 / 阅读(154) / 评论(0) 分类 英语新闻

NEW DELHI, March 16 (Xinhua) -- The Indian government has ordered food originating from(发源于) Japan to be tested for radiation in the wake of explosions at a Japanese nuclear plant following a devastating earthquake-tsunami last Friday, repo

发表于:2019-02-07 / 阅读(139) / 评论(0) 分类 英语新闻

Public opinion polls suggest most Americans favor full body scanners as a way to protect against terror attacks on commercial airliners. The benefits of scanners are being debated in a number of countries. Some groups have raised privacy issues. But

发表于:2019-02-07 / 阅读(124) / 评论(0) 分类 VOA标准英语2010年(一月)

WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine(碘) has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai

发表于:2019-02-11 / 阅读(149) / 评论(0) 分类 英语新闻
学英语单词
5-1-chlorovinyl-2'-deoxyuridine
a dope peddler
advert to
all about it
american mathematical society standards institute
antipape
antlered
April R.
arteriae thoraciea lateralis
atmospheric ray
averaging maturity
beator
beekmen
behavior standard
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Bosbury
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break mode
clem's
code of warfare
coinvent
command communication
commercial domicile
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corylophillin
ctenopteris curtisii
cutaneous histiocytosis x
daulocoris feanus
delegitimates
dipolar site
discomfort glare rating (dgr)
divorced men
dual clocking
ego-defence mechanisms
Elachanthemum intricatum
enterectomy
equilibrium adsorption model
erythrocytometers
experimental safety vehicle
fabric geometry
fibrous odontoma
forbes-robertson
forge-hammer
functional prerequisite
gasomagnetron
geodesic latitude
glitch fests
grain and seed cleaner-separator
gryglewski
half time shaft
herpeses
i.l.e.a.
Illuminance Meters
inelastic strain
iodine swab
irretraceable
it is snowing
kelvin balance
kindfield
limited company quoted on stock exchange
low birefringent fiber
master catalogue
master diagram
Mecca(Makkah)
Micrometeoroid Explorer
minimum radius at ground level
Monafed
moon about
Neolitsea polycarpa
neonatal hyperbilirubinemias
non-competitive inhibition
outside specialist
p.e
parabolic quadric hypersurface
partes rhombencephalica
penser
relaxation curve
relieve of
repair activity
rheomalaxis
sacroparasitus
separation centre
significant error
snlci of auditory tube
speed course latitude error
St-Cricq-Chalosse
Sumicidine
sun outage
take it lying down
test page termination
tetradynamous stamen
Tincalzite
tip part
Tippecanoe County
torque-converter control lever
total mastectomy
turpentine beetle
uderzoes
underground pipeline finder
Wilson depression
zarin