空间目标跟踪激光雷达

So in 1994 a small unmanned orbiter Clementine 于是柯蕾曼堤号无人太空船 was sent back to the moon, 在1994年再度前往月球 the first spacecraft to make the journey in more than 20 years. 这是20多年来首度展开这趟旅程的太空

发表于:2018-12-07 / 阅读(209) / 评论(0) 分类 神秘的月球

Water Is Buried Beneath Mars Surface, Study Says A huge lake of salty water appears to be buried deep in Mars, scientists reported this week. The presence of water raises the chances of finding life on the red planet. The discovery is based on observ

发表于:2018-12-08 / 阅读(171) / 评论(0) 分类 2018年VOA慢速英语(七)月

Scientists Deliberate Cleaning Space Junk WASHINGTON Everything that we launch into an orbit around the earth eventually becomes space debris. Scientists say the increasing number of unusable objects circling our planet is threatening functioning sat

发表于:2018-12-08 / 阅读(149) / 评论(0) 分类 VOA标准英语2014年(六月)

On the day that President Obama once again said the Assad regime's use of chemical weapons would be a game changer after a week of weighing U.S. military action or directly supporting opposition. A U.S.ally Israel, has apparently hit Syria from the a

发表于:2018-12-19 / 阅读(196) / 评论(0) 分类 CNN2013年(五)月

In 1970, the Soviet Union put a laser reflector on the moon, carried by a rover. A few months later, it disappeared. Some speculated that the rover had fallen into a crater or parked in such a way as to render the reflector inaccessible. Now after 40

发表于:2018-12-24 / 阅读(207) / 评论(0) 分类 Scientific American(四)月

Six, five, four, three, two, one, zero India launched its first mission to the moon on Wednesday, rocketing the Chandrayaan-1 into the dawn sky for a 2-year mission to redraw maps of the lunar surface. Dear colleagues and friends, its a historic mom

发表于:2018-12-30 / 阅读(211) / 评论(0) 分类 国家地理2008年

Broadcast: Feb 01, 2003 The U.S. Space Shuttle Columbia broke apart in mid-air Saturday minutes before it was to return to Earth. The U.S. space agency, 1) NASA, says none of the seven astronauts aboa

发表于:2019-01-07 / 阅读(288) / 评论(0) 分类 VOA2003(上)-科技先知

VOICE ONE: Im Steve Ember. VOICE TWO: And Im Faith Lapidus with EXPLORATIONS in VOA Special English. This week, we tell about a growing threat to airplanes around the world. And we hear about objects in space that are threatening satellites and the

发表于:2019-01-11 / 阅读(222) / 评论(0) 分类 VOA慢速英语2009年(四)月

This handout illustration image created by Australia's Electro Optic Systems (EOS) aerospace company shows a view of the Earth from geostationary height depicting swarms of space debris in Low Earth Orbit (LEO), 20 Jul 2010 Australian researchers say

发表于:2019-01-13 / 阅读(202) / 评论(0) 分类 VOA标准英语2010年(七)月

ESA Spacecraft to Land on a Comet 欧洲航天局探测器登录彗星 After a long flight through deep space, a European Space Agency probe is finally approaching its target - a comet millions of kilometers away from earth. Scientists say the missio

发表于:2019-01-14 / 阅读(163) / 评论(0) 分类 VOA标准英语2014年(七月)

In Africa, New Technologies Help Teach Women to Read 在非洲,新技术帮助教女人阅读 More Africans are communicating via text, social media and email. In Senegal, literacy experts are using the new technologies to motivate and teach women

发表于:2019-01-14 / 阅读(167) / 评论(0) 分类 VOA标准英语2014年(十月)

US Company Developing Space-Based Plane Tracking 美国公司开发太空基地飞机追踪技术 LEESBURG, VA One of the reasons Malaysia Airlines flight MH370 hasn't been found is because the plane couldn't be tracked continuously over the ocean. I

发表于:2019-01-14 / 阅读(196) / 评论(0) 分类 VOA标准英语2015年(八月)

Every year satellites are damaged or destroyed by objects orbiting the Earth's atmosphere. An Australian company is now using the latest laser technology to track these objects in order to reduce cosmic damage. Li Dong has the details. Even in space,

发表于:2019-01-19 / 阅读(217) / 评论(0) 分类 世界各地新闻集锦

Six, five, four, three, two, one, zero India launched its first mission to the moon on Wednesday, rocketing the Chandrayaan-1 into the dawn sky for a 2-year mission to redraw maps of the lunar surface. Dear colleagues and friends, its a historic mome

发表于:2019-01-22 / 阅读(197) / 评论(0) 分类 自然百科2008年

Heset out to investigate a hundred-year-old theory that said asteroids werepowered by the Sun itself. It was called the Yarkovsky effect. The Yarkovskyeffect is a very small acceleration and acts on asteroids and what it is is ifyou take a model, the

发表于:2019-01-23 / 阅读(196) / 评论(0) 分类 探索与发现2014年

By Lisa Schlein Geneva 12 February 2008 Russia is warning of a new arms race if a treaty banning the deployment of weapons in outer space is not achieved. Russia and China have jointly presented a draft treaty to the U.N. Conference on Disarmament th

发表于:2019-02-01 / 阅读(197) / 评论(0) 分类 VOA常速英语2008年(二月)

The rule is what goes up must come down, but the trouble is nobody knows exactly where the six-ton NASA satellite will crash land. This white blob is the UARS probe as it spins out of control during its descent, the footage was taken by an astronomer

发表于:2019-02-03 / 阅读(184) / 评论(0) 分类 英伦广角

Science and technology 科学技术 Solar power from space 太空太阳能 Beam it down, Scotty 老兄,传下来吧 Harvesting solar power in space, for use on Earth, comes a step closer to reality 在太空获取太阳能以供地球之用:梦想距

发表于:2019-02-16 / 阅读(218) / 评论(0) 分类 经济学人科技系列

Unit 17 第十七单元 Conversation 1 会话 1 A:Miss Sun,could you please type this report for me? A:孙小姐,请替我打这份报告好吗? B:Certainly,Mr. Baker. B:当然,贝克先生。 A:Could you please double space it so I can make co

发表于:2019-02-19 / 阅读(688) / 评论(0) 分类 巧嘴秘书情景对话

A Sci-Fi Writer: Arthur Clarke 科幻作家:阿瑟克拉克 Born in western England, on December 16th, 1917, the son of a farmer, Arthur Clarke became addicted to science fiction after buying his first copies of the magazine Amazing Stories. He beg

发表于:2019-02-21 / 阅读(219) / 评论(0) 分类 名人认知系列 Who Was
学英语单词
admissions
airborne receiving equipment
anniversary of one's birth
aphelion
arensburg
bajak
Bizana
blanket method
chalybeate water
Chromadoria
clapper
combined thermal transmission
competitive ligand
corymbas nipponica
cranberry-red
dekameter
dictionary relocation
drexell
drill-seismic facies section
duplexed computer system
elbow sb aside
ellina
embelia
end stopping(of chain)
enhancer
Epilobium roseum
escenter of triangle
final crushing
gas dome
grass-flower
hex coupling nuts
high volume cascade impactor
homogeniety
impact impulse
IMPATT
infective asthma
inner function
interpenetrationtwin
intrinsic rate
iron hydroxide
irritainment
jump hook
kinescope recording machine
Kuratake
large class
Lechbruck
light corpuscle
Lipitsy
marshal law
meteoroscopics
micropositioners
missile fuel waste water water treatment vehicle
mixing aid
Moholm
molendinarious
moulded insulator
multileaving
NSC
NSC-23759
nutrient salts
octlet
open circuit time constant
oschitis
Oxypolyethoxydodecane
pare
pelveoperitoneum
physicss
pipe and wire penetration
pirameters
Polypodium fortunei Kze.
positive-feedback
premature explosion of bomb
put one's foot in in one's mouth
pyro-carbonate
racegoing
radiorenogram
rameauite
regular wind
restems
revard
Reykholt
right hand adder
scope sight reticule
Scottish deerhound
slim saw file
slin of lenticular nucleus
starch test
stop repeating signal
technology-intensive products
tentaculiform
test of runs
texturizable
theory of naval architecture
tight-skin character
toolbags
tovarish
translator writing systems
tukaram
vocal level
wholesale gas purchase
willemse
yday