地磁极

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

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(133) / 评论(0) 分类 自然百科2011年

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发表于:2019-02-09 / 阅读(231) / 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(148) / 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(323) / 评论(0) 分类 2019年VOA慢速英语(二)月
学英语单词
ABC parties
ADACC
adjustable vaulting horse
after-recording
alpha-adrenergic antagonist
alphaproteobacterium
anchoring orders
antivirulin
arenology
as yellow as a crow's foot
avowant
barometric discharge pipe
baseline management
belt brake
britishamerican
budget constraints
cam pawl
capnodium footii
clean separation
cochlearform
crude oil washing equipment
data-driven robot
definitive position
dingbatters
direct dryer
diurnal arcs
double branch stop valve
dropped goods
electrolysis relay
endoturbinates (or entoturbinals)
epoxidize
essential problem
Fagridalur
file system input source
flow from a pump
FLWG
full scale members
functional diagnosis
Good Templar
graphite backing
gross player
high production capacity
i-woxen
inlcusion
isophan
Kamalampaka
kawawas
keep note
knotter disc
Landi Muhammad Amīn Khān
leather industry
ligamentum lateral calcaneocuboi deum
locked onto
Mai Teb
matrixing function
mentula
mesorelief
metal-dificient star
minimum cut-out
mipmapping
misgovernaunce
Mobigesic
momordicae fructus
Moro, R.
mutlak
newspapers and magazines
oil emulsion mud
oil field equipment
on-board diagnostics
Oostendorp
overcorrect
overshot tubing seal divider
overventilate
oxy-natural gas cutting
pancreatic sarcoma
pare
police offices
pot-hanger
powder photographies
prepared coal tar
pyogenic parotitis
quasi-states
R&D (research and development)
recessus camerae posterioris
scapuloanterior
shmoos
soon
sser (supplement to the safety evaluation report)
stigmatic hair
taper dowel
temperature registering system
thiaminoprotein enzyme
thinkings
tlt
tokheses
underdraught
unit delay predictor
volketswil
witch-balls
wonderest
zeghryk