质心能量

Broadcast: Jan 22, 2003 By Marilyn Christiano VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program, Explorations. Today we tell about a scientist who

发表于:2018-12-07 / 阅读(90) / 评论(0) 分类 VOA2003(上)-科技导航

A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and h

发表于:2018-12-12 / 阅读(99) / 评论(0) 分类 英语小短文

A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the

发表于:2018-12-15 / 阅读(177) / 评论(0) 分类 新东方背诵文选

A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and h

发表于:2018-12-30 / 阅读(72) / 评论(0) 分类 考研背诵50篇

分集介绍:导数,斜率,速度与变化率 Derivatives.slope.velocity.rate.of.change

发表于:2019-01-05 / 阅读(321) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

It's a workout with two goals, mean green students are doing their bodies and the environment a favor when they hop on these machines. When you talk about energy, you think about like the windmill and there the water and other things producing energy

发表于:2019-01-07 / 阅读(57) / 评论(0) 分类 万花筒2011年

One hundred years ago today, September (the) 27th, 1905, a physics paper was dropped into the mail, addressed to a German journal called AT. The paper was penned by a 26-year-old Swiss patent clerk with dark curly hair years before he sprouted that s

发表于:2019-01-08 / 阅读(146) / 评论(0) 分类 2005年NPR美国国家公共电台

The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into

发表于:2019-01-08 / 阅读(132) / 评论(0) 分类 英语小短文

A training center in Beijing recently opened a new course, which claims to help students absorb energy from the universe through a special cabin built according to the angles of the pyramids. 北京一家培训机构最近开设了一门新课程,声

发表于:2019-01-11 / 阅读(66) / 评论(0) 分类 趣味英语

AS IT IS 2016-11-28 Less Energy Now Produced by Coal in US South 目前,在美国南部,较少的能量由煤产生 Three large machines called turbines produce electricity at the Buck Combined Cycle Station in central North Carolina, near the town o

发表于:2019-01-12 / 阅读(252) / 评论(0) 分类 2016年VOA慢速英语(十一)月

The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer, kee

发表于:2019-01-23 / 阅读(59) / 评论(0) 分类 探索与发现2013年

The explosion generated a shockwave so massive it wasdetected over 15,000 kilometres away. The low-frequency waves were picked up bymonitoring stations. So it is kind of like a listening network around theworld. Thats right. Theyre not set up for fir

发表于:2019-01-23 / 阅读(52) / 评论(0) 分类 探索与发现2014年

Science and Technology 科技 Looking for the Higgs 捕获希格斯粒子 Enemy in sight? 敌军现身? The search for the Higgs boson is closing in on its quarry 希格斯玻色子的研究逼近其目标 ON JULY 22nd two teams of researchers base

发表于:2019-01-26 / 阅读(58) / 评论(0) 分类 经济学人科技系列

EXPLORATIONS – Albert Einstein By Marilyn Christiano Broadcast: Wednesday, February 23, 2005 VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program, E

发表于:2019-01-28 / 阅读(95) / 评论(0) 分类 Explorations

A-bomb, atomic bomb 原子弹 absorption 吸收 to accelerate 加速 accelerating chamber 加速室 accelerator 加速器 synchrocyclotron 同步回旋加速器 synchrotron 同步加速器 betatron 电子

发表于:2019-02-03 / 阅读(103) / 评论(0) 分类 英文语法词汇

By George Dwyer Washington 18 December 2007 New York's Rockefeller Center Plaza is one of the city's most recognizable landmarks - and one of its most popular tourist stops as well. The busiest time of year comes during the Christmas season, when a g

发表于:2019-02-08 / 阅读(84) / 评论(0) 分类 VOA常速英语2007年(十二月)

His famous equation, E =mc 2 , did not appear with the paper, but came in a brief supplement that followed a few months later. As you will recall from school days, E in the equation stands for energy, m for mass, and c 2 for the speed of light square

发表于:2019-02-17 / 阅读(65) / 评论(0) 分类 万物简史

凯特布兰切特领衔300名好莱坞女星指控性骚扰 Welcome to 'Today' - an hour of world news and analysis -- from a different perspective. I'm Suyi Coming up: --South Korea proposes inter-Korean dialogue --China says no to solid waste im

发表于:2019-02-22 / 阅读(49) / 评论(0) 分类 The Beijing Hour 新闻纵贯线

The Source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into

发表于:2019-02-25 / 阅读(74) / 评论(0) 分类 双语有声阅读

China Atomic Energy Authority head Xu Dazhe says the project will help promote international cooperation and exchanges in nuclear safety. We can see that the completion of construction of the world's largest nuclear safety centre-of-excellence, with

发表于:2019-03-04 / 阅读(119) / 评论(0) 分类 2016CRI中国国际广播电台
学英语单词
acoustical characteristic impedance
acumulative temperature
allmark
alternate account
annu
antiholin
antirace
aproximately
atmospheric waveguide duct
audience fragmentation
aurilave
averaging mode
bull riveting
bumblings
C of G
cell geometry
central oval
cesarean delivery
chlorophosphonitrile rubber
chopped lightning impulse
Claviton
cobelligerency
colpogynon
congolenst trypanosoma
counted in
Cremanthodium palmatum
del credere contract
disease diagnosis
disposal pond
drunkerd
effrenate
Elaeocarpus prunifolioides
eunuchry
Ewing family
external device response
file browsing
fine feed adjustment tank
finite system of generators
fire resisting damper
gauge of track
geared-motor
gene knockout technique
grevers
gum tragacanth
harbors statistics
hawkweed
HPQ
hydro-cooler
inlumined
input rate
jelly drink
key unit
Korvatunturi
labour-markets
Lasergraphic plotter
macro assignment statement
major repair depreciation rate
man tit
Mechano-thermoreceptor
mechanoagymnastics
meganephridia
meliola panici
menskfully
moderate strength
modulational
moisture welts
multiplier-divider unit
myeloneuropathies
Nagyhegyes
natural regeneration under shelter-wood
O. S. R.
offer an exhibit
palafoxes
pancheon
Pedicularis songarica
phylum nematodas
physostegias
planchet casting
pseudo-finite-set
radioecological
radir
rainert
refraction seismology
relishes
repugnatorial gland
Sambeek
seeth
sense training
spoilum
stream barker
T3-euthyroidism
taciturn
TBGP
temperature self-compensation
thirteen-year-olds
trade schools
traipsings
tricro
TRIGA (training research and isotope production reactor)
trust arrangement
visioplasticity
zapkowski