单词：orbital momentum
单词：orbital momentum 相关文章
More signs that the US economy is moving in the right direction: The US Labor Department says new claims for unemployment benefits declined last week, dropping below 400,000 for the first time since July 2008. Other data also shows that businesses ex
VOA标准英语2010年(十二)月
Questions for NASA after Rocket Explosion 火箭爆炸后美国国家航空航天局面临的问题 Unmanned Antares rocket is seen exploding seconds after lift off from a commercial launch pad in this still image from NASA video at Wallops Island, V
2014年VOA慢速英语(十)月
Virgin Spaceship Crash Raises Questions 维珍宇宙飞船失事引发诸多问题 WASHINGTON Plans to fly tourists to the edge of space could be delayed after Friday's crash of Virgin Galactic's SpaceShipTwo during a manned test flight. It is the se
VOA标准英语2014年(十一月)
美国火箭爆炸，私营航天产业的挫折 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosion of a private U.S. cargo space craft shortly after it's
VOA双语新闻 2014年10月
今天我们要学的词是momentum。 Momentum, 是势头的意思。 To gather momentum, 势头大增，to lose momentum, 势头减弱。美国前阿肯色州州长赫卡比在爱奥华州的基层党团会议选举中排名第一。No other candid
英语单词荟萃
Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel
(科普英语)Earth and Sky
美国私企飞船与空间站对接 WASHINGTON, Jan. 12 (Xinhua) -- A commercial spacecraft, operated by U.S. space company Orbital Sciences Corp., docked with the International Space Station (ISS) on Sunday morning on its first official cargo resup
英语新闻
SCIENCE IN THE NEWS - Space Junk Threatens Earths Orbital Environment JIM TEDDER: This is SCIENCE IN THE NEWS, in VOA Special English. Im Jim Tedder. KATHERINE COLE: And Im Katherine Cole. Today, we tell about an ever increasing number of objects in
2011年VOA慢速英语(九)月
By David Gollust Jerusalem 01 August 2007 U.S. Secretary of State Condoleezza Rice held talks with senior Israeli officials Wednesday to try to restore momentum to the Israeli-Palestinian peace process. She came to Jerusalem from Saudi Arabia, where
2007年VOA标准英语（八月）
Global Warming Could Delay Next Ice Age The next ice age could be delayed by tens of thousands of years due to excessive amounts of heat-trapping carbon dioxide in the atmosphere, which disrupts Earths natural cycle of warming and cooling, according
VOA标准英语2012年(一月)
The battle over reforming the U.S. health care system has intensified in recent weeks, and the political stakes are growing for President Barack Obama as well as for Democrats and Republicans in Congress. Pres. Barack Obama listens to a question at
VOA标准英语2009年(八月)
With Failed Launch, US Private Space Industry Suffers Setback 火箭发射失败 美国私人航天受挫 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosi
VOA标准英语2014年(十月)
...I will accept this award - as a call to action, a call for all nations to confront the common challenges of the 21st century,' said Mr. Obama Paula Wolfson | Washington 09 December 2009 Pedestrians wait at a trolley stop in Oslo, Norway in front o
VOA标准英语2009年(十二月)
By Mil Arcega Washington, D.C. 10 July 2007 A worldwide poll of more than 100 million people has selected what it calls the new seven wonders of the world. The on-line poll picked: - the Roman Coliseum - the Taj Mahal - the Great Wall of China - Mach
2007年VOA标准英语（七月）
By Jim Malone Washington 13 February 2008 Senator Barack Obama got a major boost Tuesday with victories in the Democratic presidential primaries in Maryland, Virginia and the District of Columbia. Obama remains in a tight race with Senator Hillary Cl
VOA常速英语2008年（二月）
The amount of debris orbiting the Earth has reached a tipping point for collisions, which would in turn generate more of the debris that threatens astronauts and satellites, according to a US study released on Thursday。 NASA needs a new strategic p
实用英语
3 Must-Do Strategies for Building Momentum in Life The rhythm of daily action aligned with your goals creates the momentum that separates dreamers from super-achievers. I love momentum. Seriously, momentum is a beautiful thing. Momentum enables you t
阅读空间
By David McAlary Washington 12 July 2006 Astronaut Mike Fossum (on arm)installs the International Space Station's railcar-like mobile transporter U.S. space shuttle astronauts are on their third spacewalk since Saturday, this time to practice method
2006年VOA标准英语（七月）
今天我们要学的词是momentum。 Momentum, 是势头的意思。 To gather momentum, 势头大增，to lose momentum, 势头减弱。美国前阿肯色州州长赫卡比在爱奥华州的基层党团会议选举中排名第一。No other candid
英语每日一词
10 Quotes To Change Your Momentum Weve all been there. Were out of ideas and nothing new is coming to our tired and weary minds. When these moments strike, Ive always been a fan of reading quotes to get me out of that funk, whether its writing a term
阅读空间