单词：orthonormal orbital
单词：orthonormal orbital 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
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)
nod----------点头 navel-------- 小说 North-------北方 normal------正常的
用听的背单词-基础2000MP3(h-z)
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
A: I was wondering if you have my test results in. B: I didn't see anything out of the ordinary, but I want you to log onto our website for a printout of all of the details. A: So, basically, I am OK? B: If there were any major problems, I would alwa
健康-Health
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
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)
Donetsk Residents Anxious for Return to Normal Life 顿涅茨克居民渴望重返正常生活 DONETSK, UKRAINE Away from the two government buildings being held by pro-Russian separatists, normal life goes on in the eastern Ukrainian city of Donetsk
VOA标准英语2014年(五月)
A: Hi, I was wondering if you have my test results in. B: I didnt see anything out of the ordinary, but I want you to log onto our website for a printout of all of the details. A: So, basically, I am OK? B: If there were any major problems, I would a
英语情景对话-健康
A: Hi, I think I was supposed to call for my test results today. B: If you go onto our website and put in your password, you can access your test results. A: Are you saying that there werent any problems? B: I will always have you come in for a discu
英语情景对话-健康
A: Hello, could you tell me my test results? B: Your results are posted on the website. Just put in your password and you can see the exact numbers. A: Are you saying that all my results were normal? B: We always contact you by phone to come in if th
英语情景对话-健康
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）
Are you a normal person？ 你是正常人吗？ During a visit to the mental asylum, a visitor asked the director ..., What is the criterion that defines a patient to be institutionalized? Well... said the director, we fill up a bathtub, and we offe
趣味英语
By Sarah Williams 08 October 2009 This winter in the United States will be colder than normal. That's what the classic American publication the Old Farmers's Almanac is predicting. We expect heavier than normal snow in the Intermountain region, whic
VOA标准英语2009年(十月)
Anchor: British Prime Minister David Cameron is painting an optimistic future for the country, calling on the people of the UK to show their resolve in a time of challenge. As CRI's UK correspondent Tu Yun reports, Cameron's comment comes following w
世界各地新闻集锦
Are you a normal person？ 你是正常人吗？ During a visit to the mental asylum, a visitor asked the director ..., What is the criterion that defines a patient to be institutionalized? Well... said the director, we fill up a bathtub, and we offe
英语笑话（MP3+文本）