沉积构造

The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(

发表于:2018-12-01 / 阅读(312) / 评论(0) 分类 新东方背诵文选

But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

发表于:2018-12-07 / 阅读(160) / 评论(0) 分类 火星生命

SCIENCE IN THE NEWS - Plate Tectonics By Marilyn Christiano Broadcast: Tuesday, February 17, 2004 (THEME) VOICE ONE: This is Science in the News, in VOA Special English. I'm Sarah Long. Graphic Image

发表于:2018-12-07 / 阅读(213) / 评论(0) 分类 科技之光

The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(n.[地]岩石圈)is divided into a few dozen plates o

发表于:2018-12-08 / 阅读(557) / 评论(0) 分类 新概念优美背诵短文50篇

The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(n.[ 地 ] 岩石圈 )is divided into a few dozen p

发表于:2018-12-30 / 阅读(230) / 评论(0) 分类 考研背诵50篇

SCIENCE IN THE NEWS - The Moving Story of Plate Tectonics FAITH LAPIDUS: This is SCIENCE IN THE NEWS, in VOA Special English. Im Faith Lapidus. BOB DOUGHTY: And Im Bob Doughty. Scientists who study the Earth tell us the continents and ocean floors ar

发表于:2019-01-12 / 阅读(235) / 评论(0) 分类 2012年VOA慢速英语(一)月

Earth is alone among the rocky planets in having tectonics, and why this should be is a bit of a mystery. It is not simply a matter of size or densityVenus is nearly a twin of Earth in these respects and yet has no tectonic activity. It is thoughttho

发表于:2019-02-25 / 阅读(194) / 评论(0) 分类 万物简史

Australia, meanwhile, has been tilting and sinking. Over the past 100 million years as it has drifted north toward Asia, its leading edge has sunk by some six hundred feet. It appears that Indonesia is very slowly drowning, and dragging Australia dow

发表于:2019-02-25 / 阅读(199) / 评论(0) 分类 万物简史
学英语单词
a-a-a
acetyl coenzyme A hydrolase
agranular chloroplast
all of my memories
assonated
back plate molding
be flashy
blade duct
brand iron
bubble back cavitation
cable in triples
carnons
ch'un ying chuan
cisti
clearlake
closed and pressured fuel system
consecutive instruction
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declinational inequality
dexide
diffused-junction detector
dilution-plate method
Drosin's postures
ELSI
equivalent headwind
estampie
ferrosilicite (ferrosilite)
finish casing
flanker backs
flow of the massecuite
forey
glacial amphitheater
glairing
high order harmonic component
honours student
hose bottom trousers
instance of mathml
it should be remembered
keep her head above water
kingo
know someone like the palm of one's hand
let-alone
levulorotation
light-activated silicon-controlled rectifier
liparis nakaharai
list of import commodities
loxoprofen
magilp
malskre
mamograms
maximal transformation
MF-Nitroimidazole
naked as a jay bird
National Operational Meteorological Satellite System
nonenlarged
oblique lighting
Olenti
omada
overbaul
overstimulation
patellar rete
phase delay schedule
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PMEL
polar elementary storm
predetermined cost accounting
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Pseudomethylephedrine
pterospermum acerifoliums
regular synoptic report
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rhodolite
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Saveretik
schistosoma granuloma of intestinal wall
single boss
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statistical decision process
stingy
stock arrange ( ment )
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subsigilo
sulci nervi radialis
supposita
symbolic pattern matching
take prisoner
thermophysical property
time-invariant regulator
torreyinol
twin-hull
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wrigged
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Zarzecze