单词：phase space density
单词：phase space density 相关文章
A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets
超大质量黑洞
From the depths of space, an asteroid hurtles toward Earth. [Well, our general vicinity.] But this is no ordinary hunk of galactic debris. Because the body of this asteroid seems to defy gravity. Its bound by forces never observed on this scale in sp
2014年Scientific American(八)月
US Space Agency Expands Search for Distant Planets Able to Support Life The search for worlds orbiting distant stars will intensify in the coming weeks when the American space agency NASA launches a spacecraft. Scientists hope the spacecraft will enl
2018年VOA慢速英语(四)月
By Jim Malone The U.S. presidential election campaign has entered a new phase, with both major party candidates criss-crossing the country in search of votes. After ceding the week to John Kerry and t
VOA2004（下）--美国大选
《Morning Phase》是Beck于2014年02月24日发行的第12张专辑。2015年第57届格莱美颁奖典礼上，Beck凭借《Morning Phase》获得最佳摇滚专辑奖以及年度专辑奖两项格莱美大奖。 Morning - Beck Woke up this mornin
格莱美获奖歌曲
As the old song has it, breaking up is hard to do. 正如一首老歌唱的一样，分手太难。 Not only is there the emotional angst, but in many cases one partner has to pack up and move out. 这困难之处不仅在于情感上的忧虑，在许
阅读空间
By David McAlary Washington 11 April 2006 A European spacecraft has arrived at Venus to study Earth's hot, hazy sister planet. It is only the latest of many space probes trying to understand why our c
2006年VOA标准英语（四月）
India election starts final phase 印度大选迎来最后角逐 India has entered the final phase of its marathon general election, with 107m voters eligible （有资格的，合格的） to cast ballots. （不记名票） Voting is taking place in 86 constituencies （选
英语新闻
Despite Paralysis, Hawking's Mind Soars When he turned 70 in 2012, Hawking was honored with a special exhibit at Londons Science Museum. The tribute gave visitors an inside look at the life and work of one of the world's greatest minds. We have some
VOA标准英语2013年(一月)
By Peter Fedynsky Moscow 03 October 2007 October 4th marks 50 years since the former Soviet Union hurled humanity's first object into Earth orbit. It was a small round device known as Sputnik -- Russian for satellite -- with four antennas and a trans
2007年VOA常速英语（十月）
I should say that everything is just right so far. In the long term, gravity may turn out to be a little too strong, and one day it may halt the expansion of the universe and bring it collapsing in upon itself, till it crushes itself down into anothe
万物简史
Science and technology 科学技术 Astrochemistry 天体化学 The great test tube in the sky 空中的大试管 Space is one big chemistry set 宇宙是一个很大的化学装置 MOST people think of the empty space between the stars as being, wel
经济学人科技系列
A city in central China now has free parking spaces reserved for drivers who need to answer the call of nature while on the road. 中国中部一座城市现在出现了免费停车位，专为需要在路上去洗手间的司机保留。 Spaces have
英语新闻
今天我们要学的词是phase out。 Phase out, 是逐步结束的意思。世界上最年轻的国家南苏丹独立后宣布，学校教育将逐步淘汰阿拉伯语，改用英语教学。 The government of South Sudan announced it will phase
英语单词荟萃
TUNIS, Oct. 8 (Xinhua) -- Tunisia qualified for the final phase of the 2012 African Nations Football Cup after beating Togo 2-0 on Saturday at the Rades Olympic stadium near Tunis. The Carthage Eagles took the lead with goals by Walid Hichri in the 1
英语新闻
The International Monetary Fund says the U.S. economy is struggling to overcome sluggish growth due to an unresolved government debt crisis and weaknesses in the housing market and household finances. In a report released Tuesday, the IMF downgraded
英语新闻
They were proposed almost exactly 100 years ago by Albert Einstein based on his theory of general relativity but it was only in February 2016 that scientists proved the existence of gravitational waves. And now China is starting work on the worlds hi
英语新闻
The U.S. space agency's ambitious plan to put astronauts back on the moon has been cancelled in the Obama administration's proposed 2011 federal budget. The $3.6 trillion spending plan for the U.S. government was submitted to Congress on Feb. 1. NASA
VOA标准英语2010年(二月)
今天我们要学的词组是phase out。Phase out，意思是逐渐淘汰、停止。The chief executive of General Motors cautioned against the growing trend of officials in China and a number of other countries of making plans to phase out sales
英语单词荟萃
The first rockets were Chinese. In the 1230s the armies of the Song dynasty, 首批火箭出现在中国。十三世纪三十年代，宋朝军队 who were fighting Mongol invaders, started launching fire arrows propelled by gunpowder some 300 metres
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