单词：laser output wavefront
单词：laser output wavefront 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）
OPEC will cut its oil output by 1.5 million barrels a day starting in November, with chances of more cuts to come. But from Paris, Lisa Bryant reports the announcement was met by a further drop by financial markets. OPEC hopes that by cutting output
VOA标准英语2008年（十月）
OPEC Agrees to Reduce Oil Output Kerry Sheridan Oil prices edged higher Tuesday after ministers from the Organization of Petroleum Exporting Countries (OPEC) agreed to reduce output. OPEC ministers ha
VOA2004（上）--各类新闻
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）
BEIJING, Aug. 19 (Xinhua) -- China's steel output growth slowed in July and prices of steel products have continued to drop, according to data from the National Development and Reform Commission (NDRC). Crude steel production gained 4.2 percent year
英语新闻
China's industrial output growth accelerates in October BEIJING, Nov. 9 (Xinhua) -- Industrial production growth continued to accelerate in October, presenting evidence that China's economy is picking up steam after seeing its lowest growth rate in m
英语新闻