单词:laser beam divergence
单词:laser beam divergence 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
澳洲流行天后 Kylie Minogue 最新MV《Crystallize》!小女孩演绎还没当歌星前的凯莉,拿着梳子对着镜子忘情歌唱,热舞。一代歌后的成长史呀,很励志的一首歌,有梦想就要去追逐。 歌词: When
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
I'd like to start with a short story. 我想先讲个故事。 It's about a little boy 有个小男孩 whose father was a history buff 他父亲是个历史爱好者, and who used to take him by the hand 常牵着他的手 to visit the ruins of an
beam, [bi:m] n 大梁(建筑中用作支撑的木材、金属或石头);光柱;臀围;平衡木 【船】横梁; 船幅; 船舷 (秤)杆; (犁)柄; (锄)把; 卷轴; 横杆; 杠杆 (鹿角的)主干 (灯光、日光、月光等的)束, 道,
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
Bob Beamon established himself as the favourite in the 1968 long jump by winning 22 of 23 meets in the pre-Olympic season. He almost met with disaster in the qualifying round. After fouling his first two attempts, he had only one try left. His teamma
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
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
Right on the beam To fly by the seat of his pants 美国英语当中有许多成语和俗语都和过去的历史有关系。例如,美国开拓西部的过程给美国语言增添了不少色彩。可
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 science of the future to eve
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
1. 人行道:(B) Pavement;(A) sidewalk 2. 垃圾: (B) Rubbish;(A)trash 3. 足球:(B)football;(A)soccer 4. 地铁(B)Tube(A)subway 5.饼干:(B)biscuit;(A)cookie 6.糖果:(B)sweets;(A)candy 7.句号:(B)full stop;(A)period 8. 秋天:(B)autu
Linda Lajterman suffered one of the worst experiences of her life while on a cruise with her husband and two other couples. Halfway through the trip, one of her friends stopped talking to her -- for good. 琳达?拉哲特曼(Linda Lajterman)在与丈夫
Can you tell the difference between British and American English? Check out these words, then tell us which variety of English you tend to use by leaving a comment below. 英式英语和美式英语有什么不同?看看这些单词,然后说说你平
Science and technology 科学技术 Solar power from space 太空太阳能 Beam it down, Scotty 老兄,传下来吧 Harvesting solar power in space, for use on Earth, comes a step closer to reality 在太空获取太阳能以供地球之用:梦想距
Officials could opt to abandon their tightening stance in order to counteract the trade turmoil. But that might erase the gains from the deleveraging. 官方可以选择放弃他们紧缩的立场以求缓和贸易混乱。但这么做会抹去来自于
No textbook can prepare you for being in charge of people for the first time. All the plans you made in the glow of promotion to manager collapse in those early days with the realisation that people do not always do what you tell them to do. 没有哪本
A new scientific research report has found strong evidence suggesting that man's best friend originated from China some 33,000 years ago. 一项最新的科学研究发现了有力证据,证明人类最好的朋友狗,起源于大约3.3万年前的
India remains non-committal on supporting French Finance Minister Christine Lagarde for the top job at the International Monetary Fund. Lagarde visited the Indian capital during a campaign(运动活动) to counter opposition from emerging nations