假想磁极

By Parke Brewer The women's pole vault provided one of the stirring dramas of the 2004 Olympic track and field competition. Until the mid 1990s, women's pole vault was not taken very seriously, mainly

发表于:2018-12-12 / 阅读(124) / 评论(0) 分类 VOA2004(下)--雅典奥运

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Don't be fooled by those big bovine eyes and the mouth slowly chewing cudcows have a magnetic personality. At least thats the claim made by German researchers in the

发表于:2018-12-24 / 阅读(163) / 评论(0) 分类 Scientific American(八)月

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 kneel [ ni:l ] She knelt to pray. v. 跪

发表于:2018-12-30 / 阅读(200) / 评论(0) 分类 每日攻克5词

Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

发表于:2019-01-22 / 阅读(131) / 评论(0) 分类 自然百科2011年

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(163) / 评论(0) 分类 英语新闻

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发表于:2019-02-09 / 阅读(225) / 评论(0) 分类 加州语文教材California Treasures G5

By calculating how old the rocks are where we find these ancient compasses, we can figure out how long ago the magnetized parts were locked in. That tells us which direction was magnetic north tens of thousands of years ago. Surprisingly, its not alw

发表于:2019-02-23 / 阅读(146) / 评论(0) 分类 英语时差8,16

Magnetic North Pole Moving Faster Than Scientists Expected Earths north magnetic pole is moving, researchers say. It has moved so much, so quickly that a group of scientists hurried to change a model that helps guide shipping, airplanes and submarine

发表于:2019-03-12 / 阅读(318) / 评论(0) 分类 2019年VOA慢速英语(二)月
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abaya
additional yard
Afrikanerism
afterswarms
alkyd baking insulating varnish
analytic geometry of space
ankylogossia
anomalous color vision
appert
asymptotical stability
bananarepublic.com
bandmates
bezymiannies
bountied
carrier wave
cartographical sketching
chain bond
collision relaxation time
computer-aided design (cad)
crossed Nicol
crossite
dam heightening
Dedarryomyces tyrocola
density
dioecies
direct reaction to light
drape forming
drives down
dry light
endothermies
Epileo
experimental scaling-up
filmicity
fire range
flame retardancy
floating reserve
germ-plasms
GLIROIDEA
governing factors
guv'nors
have a disposition to
heavy in section
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hypermap
impinguate
indanthrene brilliant rose
independent mesh
inhibit sb from doing sth
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intermittent air blast
ionized atmosphere
k.s
keynote speech
Lansium
legrope
level life
linothyronine
make approaches to sb
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melanotic pigment
molecular gas constant
multi-station triggering
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Neu Meklenburg
nishian
nuclear snow gage
onsi
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open-class word
petroleum asphalt
phaeosporous
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Railroad bond
resonant earthed system
reversible ratchet handle
Rheaform
rim lighting
river-drift
RRATs
scale modeling
scent glands
screw shaft bushing
self-overcoming
Seres
shale diesel oil
shipping quality
single exchange rate
small-timer
spoons
subspecialised
summonary
synchronous communications satellite
Tavda
ternary dye
thermal tension
thin film photoresistor
unintentional activation
uromyces garanbiensis
vinch
welding tool
wyce
xizhou