单词：large optical cavity (loc) laser
单词：large optical cavity (loc) 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）
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
This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Whether it's for streaming Netflix or sharing files, we're gobbling up more and more dataand we want it faster. But even shooting data with lasers over fiber-o
Scientific American(五)月
(CAIRO, Reuters)Egyptian doctors have successfully removed a 100-pound tumor from the stomach of a 17-year-old girl. （路透社开罗电）一群埃及医师日前成功地从一名十七岁女孩的胃里取出一颗重达一百磅的肿瘤。 Doc
赖世雄英语新闻听力通
I have something pretty that sits on my windowsill in my kitchen. It's a shell from Hawaii. I'm not sure what kind of shell it is, or what it is called, but it certainly is something that I love to look at. My mother brought it back from her recent t
英语博客 A cup of English
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
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 go from the sci
2013年VOA慢速英语(五)月
EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: 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
2012年VOA慢速英语(一)月
Somalia's Ethiopia-backed transitional government has agreed on a date for the withdrawal of Ethiopian troops from two major Somali cities in a new cease-fire deal between the government and an opposition faction. But VOA Correspondent Alisha Ryu in
VOA标准英语2008年（十月）
By Tom Rivers London 19 September 2009 Abdel Baset al-Megrahi in his room, in Tripoli international hospital, Libya, 09 Sep 2009 Scotland's chief prosecutor has denounced convicted Lockerbie bomber Abdel Baset al-Megrahi for posting the first of hun
VOA标准英语2009年(九月)
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）
Turkey has embarked on one of the biggest dam-building projects in the world. It aims to meet the growing energy demands of Turkey's booming economy. But the scale and speed of the project is causing concerns about the country's environment and arche
英语新闻
The armies of India and Pakistan have again exchanged fire on the line-of-control in the Kashmir region. The ceasefire violation took place Thursday evening around 180 kilometers southwest of Srinagar city, the summer capital of Indian- controlled Ka
英闻天下
China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin
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