频谱间隔, 频谱空间,频谱间隔

45.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 Suns very center. It is here that is to be found the source of the energy that the Sun constantly pours out i

发表于:2018-11-28 / 阅读(425) / 评论(0) 分类 新概念优美背诵短文50篇

A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets

发表于:2018-12-07 / 阅读(420) / 评论(0) 分类 超大质量黑洞

Broadcast: Jan 29, 2003 By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell about a space rock that

发表于:2018-12-07 / 阅读(157) / 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(164) / 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(255) / 评论(0) 分类 新东方背诵文选

James Webb Space Telescope Progresses Toward Launch WASHINGTON While the space community is looking back this week to celebrate the 25th anniversary of the launch of the Hubble Space Telescope, workers in an airtight cleanroom at Goddard Space Flight

发表于:2018-12-16 / 阅读(158) / 评论(0) 分类 VOA标准英语2015年(四月)

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(134) / 评论(0) 分类 考研背诵50篇

Angela Merkel, who has steered Germany through several global crises as its first female leader, said last Sunday that she will seek a fourth term as chancellor in general elections next year. 安吉拉默克尔上周日宣称,将在明年举行的大

发表于:2019-01-07 / 阅读(377) / 评论(0) 分类 英语新闻

Some call it the hormone of love. Its oxytocin and it helps moms bond with and breast-feed their babies, and even keeps romantic couples content. Now a study suggests that this same hormone might also help people with autismby improving their social

发表于:2019-01-08 / 阅读(155) / 评论(0) 分类 Scientific American(二)月

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(228) / 评论(0) 分类 英语小短文

Want to create a high performance environment? My guess is that you already know many of the characteristics listed below. But, you may need some incentive to motivate you to create that type of space. In high performance environments you * are comfo

发表于:2019-01-08 / 阅读(148) / 评论(0) 分类 英语小短文

Air Force Tracks Final Frontier 未来太空三种战略趋势 Theres three strategic trends that I see in space. 我在太空中看到了三种战略趋势。 General Jay Raymond, Commander of Air Force Space Command in Colorado Springs. He recently

发表于:2019-01-20 / 阅读(159) / 评论(0) 分类 2018年科学美国人1月

Science and Technolgy. 科技。 Visible-light communication. 可见光通信。 Tripping the light fantastic. 与光共舞。 A fast and cheap optical version of Wi-Fi is coming. 一个高速而廉价的光学Wi-Fi即将问世。 AMONG the many new

发表于:2019-01-26 / 阅读(198) / 评论(0) 分类 经济学人科技系列

By Alex Villarreal Washington 25 October 2007 The U.S. space shuttle Discovery has docked at the International Space Station, marking the next phase in a complex mission to expand the international orbiter. VOA's Alex Villarreal reports from Washingt

发表于:2019-01-31 / 阅读(152) / 评论(0) 分类 2007年VOA常速英语(十月)

Science and technology 科学技术 Visible-light communication 可见光通信 Tripping the light fantastic 与光共舞 A fast and cheap optical version of Wi-Fi is coming 一个高速而廉价的光学Wi-Fi即将问世 AMONG the many new gadgets u

发表于:2019-02-06 / 阅读(175) / 评论(0) 分类 经济学人科技系列

Working in Project Space One of the givens in David Allens Getting Things Done is that you cant do a project. Instead, Allen recommends you break projects down into immediate next actions, discrete doable chunks that can be cranked through with a min

发表于:2019-02-08 / 阅读(207) / 评论(0) 分类 阅读空间

2013年7月6日雅思考试 Space travel has been possible for some time and some people think the space tourism could be developed in the future. To what extent do you think it's a positive or negative development? 太空旅行即将成为可能,人

发表于:2019-02-09 / 阅读(178) / 评论(0) 分类 雅思英语

MOSCOW, Oct. 24 (Xinhua) -- The Russian Space Agency Roscosmos confirmed on Monday the list of next crew members who will fly to the International Space Station (ISS) on Nov. 14. Russia's Soyuz TMA-22 spacecraft will bring Russian cosmonauts Anton Sh

发表于:2019-02-18 / 阅读(222) / 评论(0) 分类 英语新闻

JIUQUAN, June 16 (Xinhua) -- She is a wife. She belongs to China's one-child generation. On Saturday, 33-year-old Liu Yang becomes the country's first woman entering space. The home-grown Shenzhou-9 spacecraft, atop an upgraded Long March-2F carrier

发表于:2019-02-19 / 阅读(160) / 评论(0) 分类 英语新闻

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(139) / 评论(0) 分类 双语有声阅读
学英语单词
a case of mistaken identity
Aatxe
acinic
agammaglobulin(a)emia
air insulated terminal box
analizar
anticoagulant agent
atod
bables
binsearch
binucleations
blocking-generator
blow over cooling
bookhood
cargo capacity of tanker
carpet fitter
caseinates
chapoton
clearing the decks
cold-shouldered
commercial-properties
composite wave
cross-section theorem
cupric silicofluoride
data processing switching system
Delena
designer clothes
diffrsed silicon semiconductor tensiometer
diplohaplont (svedelius 1915)
disaccommodation factor
double indemnity
dry-out sample
edible oil contamination
Embden-Meyerhof-Parnas pathway
Eria ovata
ex-banker
fados
fluorescent whitener
function of word
ganglionic receptor
garbled extracts
hard winter wheat flour
have a rise from someone
histoarchitectures
imposeth
indexed sequential access
instantaneous acceleration
International Energy Agency
Istro-Romanian
itsfea
justification ratio
Kaimanawa horses
kirlians
Kιrιk
laccaria ohiensis
laminagram
laryngophone jack
Lebusa
Llanrhystud
luneberg lens
maidliest
main lifting elevator
manero
manifestos
many dimensions
Misfortunes never come alone .
nandrolones
nitc
non-industrial
nonclassroom
orderly sequence
outer wheel hub
paperback right
papillaria semitorta
pedestrian malls
photographic reversal film
picked port
pneumatic feedleg
portal frame travel
prick
prophylacticon
reward scheme
riding lamp
running load
sassarollo
say against
siliguri (shiliguri)
slung span
sub-grain boundary
superfluous and complicated ornamentation
swamp forest
tactical computer
tallyman
trichinizing
tropical continental air (mass)
unmilled
up and up
vandalises
z80
zero in on
zoom lens