单词：sweep laser
单词：sweep laser 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）
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）
今天我们要学的词是sweep。 Sweep, 大家都知道，是扫地的意思，不过，sweep还有另外一个意思，指赢得比赛的全部胜利。 Jamaica became the first nation in Olympic history to sweep the gold, silver and bronze medal
英语每日一词
Cold snap to sweep through China BEIJING, Oct. 28 (Xinhua) -- China's central and eastern regions will experience temperature drops in coming days, while the southern parts will receive moderate to heavy rain, the national meteorological watchdog for
英语新闻
BEIJING, Feb. 15 (Xinhua) -- A strong cold front is expected to sweep most of China, dragging down temperatures by up to 14 degrees Celsius in some areas. The cold front will lower temperatures by 6 to 10 degrees Celsius in most parts of China during
英语新闻