空间碎片仿真

Have Scientists Discovered a Radio Space Shield? Space, it turns out, is not a very safe place for electronic devices. High-energy space particles can cause serious problems for satellites and electronic equipment, even on the Earths surface. These p

发表于:2019-01-03 / 阅读(63) / 评论(0) 分类 2017年VOA慢速英语(十一)月

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(89) / 评论(0) 分类 VOA2003(上)-科技先知

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(64) / 评论(0) 分类 世界各地新闻集锦

BEIJING, Sept. 6 (Xinhuanet) -- The amount of space junks floating in Earth's orbit has reached a critical level, warned scientists. The future space missions may become too dangerous to fly for a risk of colliding with space junks, said a report rel

发表于:2019-02-03 / 阅读(28) / 评论(0) 分类 英语新闻

BEIJING, Sept. 2 (Xinhuanet) -- The amount of space junk orbiting the Earth could cause fatal leaks in spaceships or destroy valuable satellites, according to a report released by the U.S. National Research Council. Computer models have shown that th

发表于:2019-02-05 / 阅读(39) / 评论(0) 分类 英语新闻

By Brian Wagner Miami 23 October 2007 The space shuttle Discovery has launched from Kennedy Space Center on a two-week mission to the International Space Station. VOA's Brian Wagner reports the seven astronauts on Discovery will deliver a new module

发表于:2019-02-08 / 阅读(53) / 评论(0) 分类 2007年VOA常速英语(十月)
学英语单词
800-pound gorilla
a. cerebellaris superior
abomination
ac electric drive reversible electric drive
acer trifidum hk. et arn.
acid-resistant ceramic pump
agreement button panel
amperemeter,amperometer
antiarrestin
antiquarian book exchange
artal
assualt area diagram
balubas
base-year average price
basilar bone
be in a flap
botanics
Calberlah
Camphetamine
cape smoke
cardioschisis
cinoxacin
Clematis hainanensis
Closing Bell
control storage emulator
cw modulated led
cybersoul
cyenopyrafen
disusance
duodenocolic
elasticator (elasticizer)
ensears
equivalent parts per billion
extension subscriber
finchenite (fenghuanglite)
gain amplifier
genus Paronychia
heating range
hettner
hokiang
humantin
impeding
inductance voltage
insulin hypertrophy
investor
iqab
is not an exact science
limonia (pseudoglochina) monocycla
local area statistics programme
lose no time
medical rubber cloth
merish
mislit
Mossgiel
move to
naturals
NSC-762
Ocwen
optimal path
ordinary stowage
Panicum coloratum
perry-smith
phorbide
planenesses
plasma electron
polarity subchron
portrayable
positively bathmotropic
premial
prosecutorships
providenciales
psychoanalyzers
puppetoon
ranking number
respiratory stimulants
rhombitrihexagonal
risebrough
rpa
short period seismometer
signed-up
Sof'ino
spaceborne remote sensing
specific absorbance
spectral-density model
spheric top molecule
stabilized retinal image
star pattern
stationary agitator
subatmospheric hydraulic model
suffix automaton
taking medicine
tenorist
tiemannite
time setting circuit
to touch
transverse bending moment
vreme
wafer test
wdw
west short pine hills
wire direction
zeptolumens