单词：laser radiation technology (larat)
单词：laser radiation technology (larat) 相关文章
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
But I needed something else. I needed something to go that extra mile, and I found it in that metaphor which I had learned from my mother when I was four. 但是我需要另外一些东西，我需要增加我的旅程，我在意象中找到了它，那
TED演讲教育篇
Sometimes it is hard to see the light, especially it lies in the invisible spectrum, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of
2015年Scientific American(一)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
AS IT IS 2016-08-26 US College Libraries in a Digital Age 美国大学图书馆走进数字时代 Many U-S colleges and universities are making big changes to their libraries. The schools are finding ways to serve students and to succeed in an increa
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