单词：raw laser power
单词：raw laser power 相关文章
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）
[00:00.00]It's quite easy,isn't it? [00:03.10]Do you want to make one? [00:05.07]Sure.I'll get some paper, [00:07.32]colour pencils and scissors. [00:10.00]Good.Then we can take our planes [00:12.30]to the park and fly them there. [00:15.14]I think m
外研社新标准初中英语九年级
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
Rawdon was the sort of man who said, privately, to his men friends, over a glass of wine after dinner: No woman shall sleep again under my roof! He said it with pride, rather vaunting, pursing his lips. Even my housekeeper goes home to sleep. But the
英文短篇小说
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
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