单词：orbital mechanics
单词：orbital mechanics 相关文章
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
US Air Force Faces Shortage of Fighter Jet Mechanics 美国空军面临战斗机机械师短缺 The United States Air Force has a shortage of mechanics to provide support for its fighter airplanes. VOA recently reported that the Air Force has 725 fig
2016年VOA慢速英语(十二)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
Welcome to the Science Talk, the weekly podcast of Scientific American posted on February 18th, 2010. I am Steve Mirsky. And you know what the hottest sport in the world is right now? Thanks to the Winter Olympics, it is, of course, curling. That's t
Scientific American(二)月
UNIT EIGHT Part One Warm Up Dialogue 1 A和B一起去参加Party，A是个Party Boy，显得十分从容，鼓励第一次参加Party的B主动接近女孩子。但当A的前女友出现时，他显得十
4+1听力口语MP3
Chapter 9 Dialog 1 Mary, do you know of a good doctor in the area? Well, the doctor we go to is a prety good What's his name? He is Dr. Li, his office is on the corner of face. Do you have his number? It's 2765656, he can probably get you in tomorro
英语会话速成
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
He was poor. He needed more money. He needed a good job. He had a job. But it wasnt a good job. It was a bad job. He was a waiter. He worked in a restaurant. It was a cheap restaurant. The meals were cheap. The customers were cheap. They usually gave
简单慢速英语阅读
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
For All Book Lovers: Chapter 2 Now, the VOA Learning English program Words and Their Stories. The goal of this show is to help you learn words and expressions in American English and also when to use them. Today, we continue talking about the word bo
2016年VOA慢速英语(六)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)
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)
Einstein was born in Ulm, in southern Germany, in 1879, but grew up in Munich. Little in his early life suggested the greatness to come. Famously he didnt learn to speak until he was three. In the 1890s, his fathers electrical business failing, the f
万物简史
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
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）
Profession and Business Our current educational system focuses on preparing today's youth to get good jobs by de- veloping scholastic skills. Their lives will revolve around their wages, or their income column. And after developing scholastic skills,
英语四级作文范文
Lesson 4 Around Town 第四课 城镇地标 November 9 11月9日 The Gas Station 加油站 Read it! 读读看！ Stan Station owns a gas station. 史坦．加油站先生拥有一座加油站。 Gas stations have many different services. 加油站提供
大家说英语
Seminar held for late explosion mechanics scientist BEIJING, Oct. 19 (Xinhua) -- A seminar was held Friday to pay tribute to Lin Junde, an explosion mechanics scientist who was involved in nearly all of China's nuclear tests. The seminar was jointly
英语新闻