准均匀辐射

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(106) / 评论(0) 分类 数学英语

HEALTH REPORT - Health: Looking for Skin CancerBy Brianna Blake Broadcast: Tue, 4 Jul 2006 16:00:00 UTC I'm Faith Lapidus with the VOA Special English Health Report. Tanning beds produce ultaviolet ra

发表于:2018-12-07 / 阅读(95) / 评论(0) 分类 2006年慢速英语(七)月

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(58) / 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(83) / 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(67) / 评论(0) 分类 2011年VOA慢速英语(三)月

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(77) / 评论(0) 分类 Scientific American(十)月

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(68) / 评论(0) 分类 2017年VOA慢速英语(四)月

This is Scientific American's 60 Seconds Science. I'm Steve Mirsky. Got a minute? In 1900 legendary physicist Max Planck described the way energy gets dissipated from any nonreflective object, called a blackbody. But even Max said if something else i

发表于:2019-01-08 / 阅读(71) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(133) / 评论(0) 分类 Scientific American(十)月

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(98) / 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(169) / 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(86) / 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(105) / 评论(0) 分类 VOA标准英语2011年(三月)

第一招:在电脑旁放上几盆仙人掌,它可以有效地吸收辐射。 第二招:对于生活紧张而忙碌的人群来说,抵御电脑辐射最简单的办法就是每天上午喝2至3杯的绿茶,吃一个橘子。 第三招:上网

发表于:2019-02-03 / 阅读(102) / 评论(0) 分类 阅读空间

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(245) / 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(95) / 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(93) / 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(65) / 评论(0) 分类 VOA标准英语2010年(一月)

1. Nuclear safety officials say they're concerned that seawater near Japan's troubled nuclear power plant contains radiation more than 3,300 times the legal limit. But they insist it's not a threat to human health. Meanwhile the president of the comp

发表于:2019-02-11 / 阅读(127) / 评论(0) 分类 美联社新闻一分钟2011(四月)

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(92) / 评论(0) 分类 英语新闻
学英语单词
Abū Saida
acrostichal hairs
air sus
Alburg
alternating-current transformer
apterogaleruca uenoi
armenocide
azobilirubin
babysat
beavy chain disease
besit
Blavatsky, Helena Petrovna
blushlike
bodying
breechloaders
burrdrill
center in form
cercospora miscanthi
chapelain
Chuzelles
climatic testing
control rod scram worth
Crossgare
cutting dynamics
data sorting algorithm
Davis, Jefferson
digital position transducer
diphenylbutylpiperidines
dynamic noise reduction
eddy loss
Ellipsoidina
ending sign
Ferula syreitschikowii
feutres
fible-fable
finger height
fold-over noise
fuckedness
glabrousness
Gnetum gracilipes
granite-gneiss
high definition screen
hook-like structure
HTR with (a) gas turbine
ICOP
interrupt control register
Isonoe
joslin
kneelest
Kryptol stove
kvas
least squares criterion
lockbolts
locked rotor voltage
Matese, Monti del
megachallenge
mud blasting
multi-turn rotary actuator
music instrument
musicality
N.B.L.
narrow-end-up mould
nervivesicales superiores
neutral vowel
normal mercruous phosphate
normal sort program key ranging procedure
o attenuator
odria
orbitomete
ownwords
oxoglutaric acid
patchset
perimenopausal
plexus dentalis
pneumogastric
polyaffinity
radar vector on course
Schlosser's treatment
screw coupler
self-surrender
smallworlds
smart client
spleen malpighian corpuscle
splet
sproling
standard colour chart
strepsipteras
taiwanomyia ritozanensis
tariff act
Tayura
teacher centre
teleosaurs
tripropylborine
two stroke direct-coupled machine
U. S. D.
ulcerating sclerosis
unlevable
update components
upland coast
voltol process
walkway duct