单词：optical refractive index
单词：optical refractive index 相关文章
The Nobel Prize in physics goes to Charles Kao, of Standard Communications Labs in England and the Chinese University of Hong Kong, and George Smith and Willard Boyle of Bell Labs in New Jersey. Kao figured out how to transmit light over long distanc
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闭着眼睛飘单词 四级词汇
A technology company is developing a lie detector app for smartphones that could be used by parents, teachers - and internet daters. 一家科技公司正在研发一款面向智能手机用户的测谎软件，家长、教师甚至线上约会者都可
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We all know time is a construct, and right now, it's kept by the very precise tick of an international network of around 500 atomic clocks. 我们都知道时间是个复杂的概念。目前，世界上有一个由大约500台原子钟组成的网络，
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By Carol Pearson Washington 03 September 2007 U.S. Military doctors have performed more than 100,000 eye surgeries on active duty personnel to eliminate the need for glasses or contact lenses. Now, at the new Joint Warfighter Refractive Surgery Cente
2007年VOA标准英语（九月）
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
2018CRI中国国际广播电台