地球等离子体层

The key difference of course is that a sunspot's 最关键的不同点在于太阳黑子 an awful lot bigger and so the total energy, 大得多,所以太阳磁场内 or the amount of energy in the magnetic field 所含的总能量大得惊人 on th

发表于:2018-12-07 / 阅读(78) / 评论(0) 分类 太阳科普

Now the speed of light is a very,very big number. 光速是个很大的数字 So if we just take a small amount of mass, 所以只要一点点质量 you get a huge amount of energy. 就含有大量能量 And that's the energy which actually powers ou

发表于:2018-12-07 / 阅读(95) / 评论(0) 分类 太阳科普

VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Shirley Griffith with EXPLORATIONS in VOA Special English. This week, we hear some unusual sounds from space. Scientists created them by taking radio wave observations and turning them into sound waves

发表于:2018-12-15 / 阅读(28) / 评论(0) 分类 VOA慢速英语2008年(一)月

Easily confused by this idea, there has a big thawed iron inner core, so that I think it's just the bar magnet, just permanent magnet frozen in nad, and that's where causes all the magnetic field. But it's too hot inside the Earth, that can't happen

发表于:2019-01-22 / 阅读(48) / 评论(0) 分类 自然百科2011年

Don: It's time once again for one of those Moments of Science that we like to call Never Thought to Ask.Our never thought to ask question for the day is: Why is the earth round? Ya?l: Why is the earth round? I never thought to ask that. D: Of course

发表于:2019-01-22 / 阅读(40) / 评论(0) 分类 英语时差8,16

What is at the center of the universe? 宇宙的中心是什么? It's an essential question that humans have been wondering about for centuries. 这是个很重要的问题,几百年来,人们一直在探索。 But the journey toward an answer

发表于:2019-02-13 / 阅读(56) / 评论(0) 分类 TED演讲教育篇
学英语单词
'Anbarān
-abilities
adjustable bed
American Association of Law Libraries
amino sugars
Arlanzon
atratogenin
Babispe
BARTing
batchpat fibre
Battle of the Somme
beddred
bet shemesh
blow on
Breit-Wigner equation
Caudites
cephalostegite
charking
chemical testing
Contrexeville
crosscom
crossnesses
cultural acceptability
cut-off test
decade resistance
detour circuit
disproportionableness
Dohle's aortitis
ectopia cordis pectoralis
El Cabo de Gata
enzyme-linked-immunosorbent serologic assays
erbani
fa virus
facing of pile
false combination
ferry trestle bridge
flow management
Fresnel formula
glass-bulb rectifier
great bridge
handling airlock
heavy casting
honore balzacs
illegal use
interneron
Kaiwatu
khlebnikov
Lake Villa
leaf renewal
liquid-helium
m.a
magnetohydrodynamicss
Mandelstam representation
mankewitz
mark space
message switching data service
methamphetamines
michaeli's equivalent current
multiple lightning stroke
naval flight officer
nrhx (non-regenerative heat exchanger)
ophthalmophyma
orientation accuracy
parentheticals
Parmigiano-Reggiano
Pedro de Freitas
phaticity
phosphotungstic acid
polarization Green function
quasi-projective variety
Quiquive, R.
Qulbān Layyah
Raft R.
rami temporales superficiales
rice cultivation
rift sawing
river bottoms
roll-tube technique
saw mill refuse
self-limiting effect
setting you back
ship to shore communication
shusef (shusp)
source-computer
staple length
steelcase
stockade
stratified engine
swap arbitrage
systematic-error
Tartessians
telegraph distortion
thessalus
thiosemicarbazide
Tigrillo
Tonaki-jima
turned back
Upsaroka
valve-operated water closet
wedge of buoyancy
zactly breath
zinnia grandiflora nutt.