单词：laser piercing power
单词：laser piercing power 相关文章
[ti:how do you do it] [ar:the beatles] [al:anthology 1] the beatles - how do you do it? www.bzmtv.com how do you do,what you do to me i wish i knew if i knew how you do it to me i'd do it to you how do you do,what you do to me i'm feeling blue wish i
珍藏经典老歌
By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
Ouch! About a quarter of all school-age kids will break or otherwise damage a tooth. Adults have their share of cracked chompers too. But what if fixing a busted bicuspid was as easy as zapping it with a laser? Preliminary work with young rats has mo
英伦广角
1. US and Asian officials say it appears that North Korea may be preparing to test its nuclear capabilities again. Secretary of State Condoleezza Rice is planning to spend several days in Asia, shor i
美联社新闻一分钟2006
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
VOA常速英语2007年（十一月）
Science and technology 科学技术 Solar power from space 太空太阳能 Beam it down, Scotty 老兄，传下来吧 Harvesting solar power in space, for use on Earth, comes a step closer to reality 在太空获取太阳能以供地球之用:梦想距
经济学人科技系列