激光观察器;激光显示器

VOA常速英语2008年-US Government Reviews Laser Eye Surgery

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

发表于:2018-12-08 / 阅读(54) / 评论(0)

VOA常速英语2008年（四月）

万花筒 klaidescope 2007-11-06&11-07, 美臀大赛

No, they haven't all been caught shot at the same time. These are the finalists in the world's most beautiful bottom competition and it's judgement time for their bums. This is of course happening in Germany where they really know how to appreciate t

发表于:2018-12-11 / 阅读(57) / 评论(0)

万花筒2007年

VOA慢速英语2013 EXPLORATIONS - The History of the Laser

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

发表于:2018-12-16 / 阅读(53) / 评论(0)

2013年VOA慢速英语(二)月

美国有线新闻 CNN 2013-07-22

Showing you images that just released of Boston bombing suspect Dzhokhar Tsarnaev, coverred in blood he would be arrested by police. * has the behind scene photos for us trying what is going on here, why are these photos now being released. We'll see

发表于:2018-12-19 / 阅读(71) / 评论(0)

CNN2013年(七)月

Watch the US Navy’s New Laser Weapon in Action

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

发表于:2019-01-02 / 阅读(62) / 评论(0)

2017年VOA慢速英语(七)月

VOA常速英语2007年-Scientist in Texas Runs NASA's Lunar Laser Prog

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

发表于:2019-01-31 / 阅读(70) / 评论(0)

VOA常速英语2007年（十一月）

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be on the right side of the hedge

beam accelerating voltage

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