单词：frictionless surface
单词：frictionless surface 相关文章
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
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
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By Heda Bayron Hong Kong 25 January 2006 South Korea's president has warned of
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
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
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
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
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
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
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
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
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
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
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
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
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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
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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
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
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,
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
英语听力文摘 English Digest