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
Achelous River
activities jure imperii
advanced passenger train
alpha-Chemokines
analogous poles
annexation property
antimaterialism
artist's book
aschbach
ascii table
attracter
backflushing chromatography
beclouds
bephenium
bia bia
Bowse to!
catonsville
Centotheca
chromosome theory of cancer
circuit peak working off-state voltage
clomids
coherency identification
concomitant variates
crotoxin
ctenophore family
cylinder passage
cystic ameloblastoma
daemon process
dirty words
doughmaking
Dwarf-juniper
e.b
ekos
Emmet's retractor
eucalyptol resorcinol
freelander
fuel spray evaporation
generalized exponential valuation
genus Gerrhonotus
hausted
heating dehydration
hemitropous
Homand
horizontal surveyor base
horsage
infusion bottle
integral leakage
international disputes
josiam
kinetics of rigid body
laicity
lithium selenate
little-old-lady
loss condition
low alloy tool steel
macula retinae
malaria parasites
mckeon
MDM2
Mentba crispa L.
metabolic, metabolical
meteoriella soluta
mica alba
Mulgedium umbrosum
non-magnetic body
nonparametric training method
Nosema cochinchinensis
ockamie
octadecylselyl
official endorsement
out at elbows
oxygen-depleted
Paal Harbor
partial charge
Pforzen
Polybrookite
pumpkinless
Qaddafism, Qaddafi-ism
real-time relative addressing
revolving underwriting facilities
running blocking
Scientologically
self-excited system
shielding practice
single auction price
songtaew
special protocol
spinkie
spool holder complete
Stabroek
stiff competition
Syracuse salt series
through a tempest of shot and shell
ticklest
tinea manuum nigra
track recording coach
transmogrify
under-leather
unit vectors
would you believe it