单词：spin flip Raman laser
单词：spin flip Raman laser 相关文章
Back at the explosives lab, examiners use a high-tech instrument called a Raman spectrometer, a device that determines if a package contains explosive material. With the Raman, what we are doing is th
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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
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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
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New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl
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Merchants Put New Spin on Advertising He has been spinning signs for five years. There is a lot of money being made in advertising, he says. The income, however, is not the only reason Moreno loves his job. I have the most fun doing what Im doing, he
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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
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Six Little Mice Sat Down to Spin Six little mice sat down to spin, Pussy passed by, and she peeped in. What are you doing, my little men? Making coats for gentlemen. Shall I come in and bite off your threads? No, no, Miss Pussy, you'll bite off our h
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今天要讲的习惯用语有这样一个共同的关键词： flip。 Flip这个词有多种不同的意思，而且既可以是动词也可以是名词。当flip作动词的时候有一种意思是急促而突然地翻动。比方说： the boilin
美国习惯用语
我们要学习的两个习惯用语中都包括下面这个词：flip。Flip作动词的时候意思是：轻轻地投掷和抛出、转动、和挥动。我们今天要将的第一个习惯用语就是flip out。这个习惯用语的意思是过分激
美国习惯用语
India has signed its first contract to build nuclear power plants after the international community lifted an embargo on civilian nuclear trade with the country. The deal marks the end of India's nuclear isolation. Chairman and CEO of Areva, Anne La
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India is coping with huge energy shortfalls as a growing economy raises demand for power. The government has pledged to cover the gap in five years. 由于国内不断增长的能源需求，印度正在面对一场严重的能源短缺。印度政府希
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如今的竞选意味着花费几百万美元作电视广告，邮寄宣传印刷品。候选人也得和数以千计的志愿工作人员日以继夜地四处奔波。今天先学两个表示现代助选人员的习惯用语。第一个是：advance
美国习惯用语