磁北极

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发表于:2019-02-09 / 阅读(199) / 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(124) / 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(297) / 评论(0) 分类 2019年VOA慢速英语(二)月
学英语单词
abandonment pressure
achromosomal
active implantable device
air tight joint
application software engineering
Aythya valisineria
beckoneth
bicentennially
black fritillaries
Brinell-hardness
Byelostok
calculated crime
coniogramme procera
consectators
cyclotronic
deca-amperes
deposition money
developed black
devil's coach-horses
dialogistically
dihydropyrroles
distribution basis
domain of relation
ectomeres
effect of eutrophication
efforces
electro-gas arc welding(egw)
electronic reconnaissance accessory
Elihu Thomson
erh
ethylidine
euthanisation
evaporation gauge
external load-circuit
foot step fastening angle
forage chopping equipment
fore-masthead light
fresh aquatic foods
gamma-compensated ionization chamber
gamma-ray burst
garcinia hanburyis
guettard
hot water dip
Hozyme
induced labor by oxytocin
instrument symbols
intertoll trunk
intraretinal electroretinogram
intrinsically stable superconductor
irany
John Moses Browning
Kavir Desert
Kifubwa
kitaibelite
Kristensen, Mount
labor liquidity
legs eleven
mail call
menstruated
middle irishes
myxotrophy
neoliberal
nuclei sapraopticus
nutrient-blood
paleozome
partial duality
Perugia, Prov.di
photophobic
pingback
pipe tobacco
platinum(vi) oxide
possets
precipitinophoric
prediction studies
primitive vertebrae
printing fee
radt
recursive routine
regazzoni
Resedaceae
respiratory regulation
retinula
revolutionized
ride bodkin
roumeliotis
SDr.
separation medium
shared address
skewed-ring dowel
spelding
standard of time
Suboccipitofrontal
subvital mutations
sweet bough
tangible result
thermal detector
transgression(darlington & mather 1949)
u-tube pressure gauge
Upper Manzanilla
urtica laetevirens maxim.
wanings