单词：laser cavity dumper
单词：laser cavity dumper 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）
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
2013年VOA慢速英语(二)月
The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network
2017年VOA慢速英语(七)月
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）
Key Sentences（量点句子） 698．Where is that memorandum? 备忘录到哪儿去了？ 699．Which memorandum are you talking about? 你说的是哪一份备忘录？ 700．Did you look through all the other papers on your desk? 你桌上别的文
实用英语
加拿大超人气流行RB歌手Shawn Desman小清新二单《Dum Da Dum》 加拿大超人气流行RB歌手Shawn Desman今年第二支单曲MV首播！作为新一代人气歌手，并且还曾赢得2011 MMVA最重要年度MV奖项，Shawn Desman依旧
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