驱动滑轮表面摩擦系数

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(521) / 评论(0) 分类 VOA慢速英语2009年(十二)月

wretched incidence broaden trader coefficient ass forthcoming loom elapse imperative reckless coupon conversion lily scorch soften conception abide attendance chunk craft count shorthand villa blond intellect

发表于:2018-12-01 / 阅读(319) / 评论(0) 分类 用Mp3背六级单词

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(156) / 评论(0) 分类 探索与发现2014年

在火星上骑行是一种怎样的体验,一定比在伦敦上下班高峰期开车还费劲吧...... Neil: Hello and welcome to 6 Minute English from BBC Learning English, I'm Neil and with me today is Chris. Chris: Hello there. Neil: Now Chris,

发表于:2018-12-27 / 阅读(138) / 评论(0) 分类 一起听英语

地道美语听力播客English as a Second Language Podcast (ESLPod),是一家位于美国加州洛杉矶的英语教育研究机构推出的英文听力会话,于2005年7月23日首播, 主播Dr. Jeff McQuillan为南加州大学的语言学博士

发表于:2019-01-01 / 阅读(195) / 评论(0) 分类 地道美语播客

Men, said the little prince, set out on their way in express trains, but they do not know what they are looking for. 那些人们,他们往快车里拥挤,但是他们却不知道要寻找什么。 Then they rush about, and get excited, and turn

发表于:2019-01-01 / 阅读(152) / 评论(0) 分类 小王子

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(206) / 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(227) / 评论(0) 分类 2006年VOA标准英语(三月)

3.基尼系数 Gini coefficien 国家统计局局长马建堂首次披露过去10年全国居民基尼系数的变化后,北京也将适时公布本地区的基尼系数。 Beijing will release its own Gini coefficient for 2012, a National Bureau o

发表于:2019-01-08 / 阅读(211) / 评论(0) 分类 英语笔译

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(146) / 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(185) / 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(148) / 评论(0) 分类 TED演讲娱乐篇

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(199) / 评论(0) 分类 VOA2005(上)--环境科学探索

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(168) / 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(244) / 评论(0) 分类 2007年VOA标准英语(七月)

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(158) / 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(198) / 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(155) / 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(243) / 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(204) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
adenosin-ketohexose
after telemotor
aileron control
amount carried forward
anglican communions
antihormonal
aqueous hydrazine
association centers
astralis
bike-to-work
Boas-Kaufmann bacillus
boundaryless organization
Broken Britain
brotherstone
buzz cut
caffeinators
Center alignment
centre tap
combat visual information support center
commandes
commodie
core-funding
corporeous
corpspeak
descriptive null hypothesis
Dinotricheae
earthen container
ellipsoidal shell
emules
equiareal mapping
European fire salamander
explosion equivalent
fever tree
field programmable logic arrays
flowing afterglow technology
fluidized-bed temperature
fusion complex
futtock chain
gmelinol
government incomes
graphite bronze
Heaviside lorentz unit
horn block shoe
horse-tail
Hugh the Great
Hypericum hengshanense
interrobangs
isopeptidases
isotime
knuckle-joint
leucomas
manual weight batcher
Matsuo Basho
maximum probability estimator
meles rug
Motwani
no-boundary
nonadjustable restrictor
nouvelle
oceanic trench
optical interference filter
Panovo
para-athlete
patrilineality
pollenisers
Pont-en-Royans
porphyran
pressure quenching
processing topping
prowersite
pure material
pynsors
radial flow reactor
reproductive toxicology
Rhipaean
root filet
Santesson's anemia
selangors
shock absorbing suspension
single tone
sonoelasticity
spaghettified
strategic decision making
supernotes
Swan R.
swimming capability
synovial(fluid)
szaibelyite deposit
tea-hamper
thermonatrite
Time Limit of Arbitral Awards
trapezoid ridge
Trenaunay
tropical forest zones
Turkish Angora
ultrapotassic
underbleaching
unhackneyed
volume of effective buoyancy
zoorium
Zurubi