水力传动

Ronald Reagan: The Space Shuttle

发表于:2018-12-05 / 阅读(176) / 评论(0) 分类 美国经典英文演讲100篇

Broadcast: May 10, 2003 By Cynthia Kirk This is the VOA Special English program, In the News. Investigators say they now believe they know what caused the American space shuttle Columbia to break apar

发表于:2018-12-07 / 阅读(119) / 评论(0) 分类 VOA2003(上)-科技导航

By Paul Sisco Washington 30 May 2008 Saturday's shuttle mission to the International Space Station can come none too soon for station crew members. A broken toilet has had them using a backup system, and they need a new pump mechanism. The crew of th

发表于:2018-12-08 / 阅读(111) / 评论(0) 分类 VOA标准英语2008年(五月)

Broadcast: Mar 15, 2003 The U.S. space agency NASA is getting ready to resume shuttle flights as early as September or October. But the return to flight depends on whether the cause of the shuttle Col

发表于:2019-01-03 / 阅读(188) / 评论(0) 分类 VOA2003(上)-科技先知

Broadcast: Feb 07, 2003 U.S. space agency officials confirmed Friday that they are analyzing military photographs that appear to show damage to the space shuttle Columbia shortly before it disintegrat

发表于:2019-01-03 / 阅读(157) / 评论(0) 分类 VOA2003(上)-科技先知

By Rohit Kulkarni Washington, D.C. 23 July 2007 Flying into space is an adventure only a select few will ever experience. But the U.S. space agency, NASA, is now offering visitors to the Kennedy Space Center in Florida the excitement of spaceflight w

发表于:2019-01-12 / 阅读(146) / 评论(0) 分类 2007年VOA标准英语(七月)

The Space Shuttle Endeavour has landed after completing an 11-day mission to expand living space aboard the International Space Station. VOA's Brian Wagner reports from Miami. Space shuttle Endeavour and the STS-126 crew land at Edwards Air Force Ba

发表于:2019-01-13 / 阅读(117) / 评论(0) 分类 VOA标准英语2008年(十二月)

NASA Identifies Shuttle Endeavour's Heater Glitch NASA says engineers at Kennedy Space Center believe they have identified the cause of the heater failure that forced the postponement of the launch of the shuttle Endeavour. NASA technicians say the f

发表于:2019-01-14 / 阅读(146) / 评论(0) 分类 VOA标准英语2011年(五月)

Study: No Evidence Hydraulic Fracturing Pollutes Water A new study finds no evidence that the controversial practice to extract natural gas known as hydraulic fracturing is contaminating ground water. The report, Separating Fact from Fiction in Shale

发表于:2019-01-14 / 阅读(150) / 评论(0) 分类 VOA标准英语2012年(二月)

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(136) / 评论(0) 分类 2007年VOA常速英语(十月)

WASHINGTON, May 30 (Xinhua) -- After nearly 12 days together in orbit, U.S. space shuttle Endeavour(奋进号) undocked from the International Space Station on Sunday night, NASA announced on Monday. According to NASA, the undocking took place at 11:

发表于:2019-02-02 / 阅读(146) / 评论(0) 分类 英语新闻

By David McAlary Washington 14 July 2006 Expedition 13 crewmember Jeff Williams, left , work on the Interface Umbilical Assembly, the failed component of the railcar system, with commander Steve Lindsey in the Destiny module of the ISS Astronauts ab

发表于:2019-02-03 / 阅读(196) / 评论(0) 分类 2006年VOA标准英语(七月)

By Michael Bowman Washington 20 February 2008 The U.S. Space Shuttle Atlantis is back on earth after delivering a new laboratory to the International Space Station. VOA's Michael Bowman has details from Washington. Sonic booms echoed over Florida as

发表于:2019-02-05 / 阅读(94) / 评论(0) 分类 VOA常速英语2008年(二月)

By David McAlary Washington 15 July 2006 The U.S. space shuttle Discovery has departed from the International Space Station (ISS), but has not gone far away. It will remain in the vicinity of the outpost until flight controllers are certain there is

发表于:2019-02-07 / 阅读(207) / 评论(0) 分类 2006年VOA标准英语(七月)

WASHINGTON, July 10 (Xinhua) -- U.S. space shuttle Atlantis docked with the International Space Station on Sunday morning after nearly two days of flight. Commander Christopher Ferguson guided space shuttle Atlantis to a docking with the station at 1

发表于:2019-02-08 / 阅读(113) / 评论(0) 分类 英语新闻

WASHINGTON, July 8 (Xinhua) -- U.S. President Barack Obama on Friday hailed space shuttle Atlantis' final flight in NASA's shuttle program, saying Americans across the country watched with pride as America reached for the heavens once more. Obama exp

发表于:2019-02-09 / 阅读(158) / 评论(0) 分类 英语新闻

The U.S. space shuttle(航天飞机) Discovery has completed its work at the International Space Station on its 39th and final mission, and is preparing for Wednesday's scheduled landing at the Kennedy Space Center in Florida. The shuttle success

发表于:2019-02-17 / 阅读(122) / 评论(0) 分类 英语新闻

As crew members of the upcoming NASA space shuttle mission prepare for the final flight of the shuttle program, they say they are inspired by NASA's accomplishments, but also about the retirement of the shuttle fleet and lay-offs among the NASA commu

发表于:2019-02-18 / 阅读(101) / 评论(0) 分类 英语新闻

The space shuttle Endeavour has returned to Earth for the final time, after completing a 16-day mission to the International Space Station. NASA welcomed home the Endeavour shuttle before dawn Wednesday, after the ship glided in from a safe re-entry

发表于:2019-02-18 / 阅读(141) / 评论(0) 分类 英语新闻

WASHINGTON, March 9 (Xinhua) -- U.S. space shuttle Discovery landed safely at the Kennedy Space Center in Florida on Wednesday, ending its nearly 27-year flying career as the world's most- traveled spaceship(宇宙飞船). According to NASA, Disc

发表于:2019-02-18 / 阅读(131) / 评论(0) 分类 英语新闻
学英语单词
-eridine
acousto-optic oscillator
antimyoclonic
antisegregationism
armor-piercing discarding sabot
Baisoara
ballagan pt.
Bazaine, Franois Achille
be amazed at
be reincarnated
bolster pillow
bone space filler
bristly oxtongues
buchanans
capillary fragility test
capital normal university
carnadine
checked-by
Chicago disease
corrugated boiler
crosswise beam foundation
cryptic prophage
cryptoprocta feroxes
dipaks
dunphy
electrical testing instrument
entozoa
even now
extern
fibre splicing technique
FlashMob supercomputer
freshen yourself up
frondesces
gravisphere
herringbone score
hydraulic shock absorber
hysteresiscope
Isenga
isothermal transformation diagrams
jacquard ribbon
Jiefu
lactic dehydrogenase virus (ldv)
lanostane
liponym
lump-sum write off intangibles
Malacosoma americana
mean speed of piston
medicinal gas
medium turn
mispleading
monopulse autotracking
moomba
MSG (maximum stable gain)
multi-roll straightener
multipoint consistency curve
myelinolysis
N-Hydroxycantharidine
Nagata ring
notochordal groove
Novoridazine
occasional monograph series
optimal adjustment
outcriers
passive attitude control system
pelmet skirt
pine cones
plug system
pot dissolver
quantities bill
R-EBA-GH
radiotransmitte
receivables financing
reimbue
researchings
ridered
right recursive grammar
rostrula
savings turnover ratio
Scorzonera capito
Secord
semi-empirical relation
slow season
Synvinolin
table locking
tape-decks
tell-tale screen
thermophilic fermentation
thermotaxic
Tinospora crispa
toothdrawers
totentanzs
Troya, R.
underpredict
United States Savings Bonds
unobedient
variation of squares
veterans' preference
vibrating rod
Weissenberg diffractometer
western yew
xth
yobs