表面摩擦

VOICE ONE: I'm Mario Ritter. VOICE TWO: And I'm Steve Ember with EXPLORATIONS in VOA Special English. This week, we tell about some of the biggest space stories of two thousand nine. First, there was the American space agency's discovery of water on

发表于:2018-11-27 / 阅读(410) / 评论(0) 分类 VOA慢速英语2009年(十二)月

But the friction and heat wears away at the space rock, the hot air actually melts the metal surface, and often the collision with the atmosphere can have a shattering effect, splitting the meteorites along fissures. This is an actual meteorite, and

发表于:2018-12-03 / 阅读(82) / 评论(0) 分类 探索与发现2014年

By Heda Bayron Hong Kong 25 January 2006 South Korea's president has warned of

发表于:2019-01-04 / 阅读(144) / 评论(0) 分类 2006年VOA标准英语(一月)

By David McAlary Washington 06 March 2006 The newest American mission to Mars is hurtling toward the red planet, due Friday to examine it in the sharpest detail yet. It will be the largest spacecraft

发表于:2019-01-06 / 阅读(125) / 评论(0) 分类 2006年VOA标准英语(三月)

By David McAlary Washington 10 March 2006 Mars Reconnaissance Orbiter Another U.S. spacecraft has begun orbiting Mars to study the red planet in unprecedented detail. The Mars Reconnaissance Orbiter w

发表于:2019-01-07 / 阅读(135) / 评论(0) 分类 2006年VOA标准英语(三月)

New Skateboard Defies Gravity WASHINGTON A futuristic dream only a couple of decades ago, the hoverboard a skateboard that floats above the ground - has finally been made possible. While still not ready for mass production, it promises to become a co

发表于:2019-01-14 / 阅读(78) / 评论(0) 分类 VOA标准英语2014年(十一月)

Scott and his final team of five arrived at the South Pole in 1912 January to find they had been beaten to it by a Norwegian team led by Roald Amundsen, 1912年一月,斯科特和他的五人小分队 到达了南极点。但不巧,他们发现由挪

发表于:2019-01-18 / 阅读(77) / 评论(0) 分类 TED演讲娱乐篇

Scott and his final team of five arrived at the South Pole in 1912 January to find they had been beaten to it by a Norwegian team led by Roald Amundsen, 1912年一月,斯科特和他的五人小分队 到达了南极点。但不巧,他们发现由挪

发表于:2019-01-18 / 阅读(85) / 评论(0) 分类 TED演讲娱乐篇

As the Sino-U.S. trade dispute escalates, economists from a leading Chinese think tank have called on China to fight to the end, and not to yield to pressure. Trade frictions between China and the United States have continued to grow, as the American

发表于:2019-01-19 / 阅读(74) / 评论(0) 分类 2018CRI中国国际广播电台

By Scott Stearns white House 18 January 2007 The White House is dismissing reports of friction between Iraqi Prime Minister Nouri al-Maliki and U.S. President George Bush. VOA White House Correspondent Scott Stearns reports, the Bush administration

发表于:2019-01-31 / 阅读(111) / 评论(0) 分类 2007年VOA标准英语(一月)

Huygens Spacecraft Arrives at Saturn Moon “慧更斯”号抵达土星卫星 After a seven-year ride to Saturn on the U.S. Cassini spacecraft, the European Space Agency's Huygens probe is finally at

发表于:2019-01-31 / 阅读(109) / 评论(0) 分类 VOA2005(上)--环境科学探索

By Peta Thornycroft 22 November 2007 The political future of Morgan Tsvangirai, the leader of Zimbabwe's divided opposition Movement for Democratic Change, is facing challenges. As Peta Thornycroft reports for VOA, many of his closest associates are

发表于:2019-01-31 / 阅读(77) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Andre de Nesnera Washington 11 October 2007 Relations remain tense between Russia and Georgia several weeks after Georgian forces killed two Russian military officers in the Georgian separatist region of Abkhazia. In this background report from Wa

发表于:2019-01-31 / 阅读(84) / 评论(0) 分类 2007年VOA常速英语(十月)

By David Gollust State Department 16 July 2007 The State Department said Monday there is no rift between the Bush administration and former British Prime Minister Tony Blair over his new role as envoy for the international Middle East Quartet. Mr. Bl

发表于:2019-02-02 / 阅读(160) / 评论(0) 分类 2007年VOA标准英语(七月)

LOS ANGELES, June 18 (Xinhua) -- Microsoft Corp. unveiled Monday a family of tablets dubbed Surface, built on Windows 8, at an event in Los Angeles. Microsoft Chief Executive Steve Ballmer introduced the company's Surface family of tablets. The devic

发表于:2019-02-17 / 阅读(109) / 评论(0) 分类 英语新闻

BEIJING, June 12 (Xinhua) -- Pressure from trade frictions has continued to increase this year for Chinese enterprises, while further challenges are expected in the future, a commerce official said. Li Chenggang, head of the Department of Treaty and

发表于:2019-02-18 / 阅读(82) / 评论(0) 分类 英语新闻

BEIJING, Apr. 16 (Xinhuanet) -- China and the United States will experience more trade friction in the high-end manufacturing sector, as Washington protects its domestic industries, officials said on Sunday. Friction will surely increase as China and

发表于:2019-02-18 / 阅读(111) / 评论(0) 分类 英语新闻

On our last program, we learned how water bugs manage to stand on the surface of a pond: The pads of their feet resist contact with the water just like wax paper does. This allows the bug to rest on the thin film of surface tension that naturally cov

发表于:2019-02-23 / 阅读(90) / 评论(0) 分类 英语时差8,16

China, EU to negotiate over solar panel friction BEIJING, Sept. 11 (Xinhua) -- The Chinese government on Tuesday sent a delegation to Europe to negotiate with the European Union (EU) about the trade friction over solar panel imports. The delegation,

发表于:2019-02-25 / 阅读(165) / 评论(0) 分类 英语新闻

Why Frisbees Fly With a gentle flick of the wrist on a warm summer day, you can launch a frisbee on a long and graceful flight. Why do they fly so well? One reason is something called gyroscopic force. This is the tendency of a spinning object to mai

发表于:2019-03-09 / 阅读(132) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
...tell me about it
angle of rise
basic of distribution
belfry cloth
bicmos technology
bite the hand that feeds
boat group
bodyship
Bolshevistic
Boulouba
brake hoop
breakingoff
charity stamp
cilioposterocapsular fibers
circinuss
classified frequency series
compactly generated space
computer interconnect
counter center
crossgrid
depropagation
desiccated wood
desulphurizing
Du-Bo gauge
dying patients
early watering
earth coverage beam
ecornutum
el-essawy
electronic pulse height analyzer
enamel can lining
enoyl-CoA hydratase
feet per minute
file handling procedure
five-function
GDP
Gerdāb, Rūdkhāneh
have a nose for
hearing conservation regulations
hemera
heretability estimate value
heteroovular
inocular
intrusive r
invariance method
islomania
isoeugenol formate
Kalkchromgaranat
knitted velour
lace milk
lackquaie
load distribution instrument
maintain market
map intelligence
minimum adjustable table speed
mitiphylline
money launderings
monoovular
motor-drive
musk ketone
N-methylcarbanilide
naring
neobrucidine
net damaged value
obtunders
Old Flemish
open-air temperature of ships
ormoc bay
pagophilas
persky
piastrinemia
postacrostichal
postoblongata
precipitation hardening steels
protective sanitary zone
pushboat
rami alveolaris superior medius
Ramocsa
rated continuous direct current
Recognition.
resultant hierarchy
rugula
secondary school students
setactivepage
setting base for counter weight
sharmas
silicon computer
sketch of elevation
SPC (system power control)
Spinnish
suay
sulfydrate
tacis
territory-marking
tuning category
uk deed poll
unabolishable
unutilized capacity
variable Chinese rose
voting ballot paper
wehrum
window sill