单词：laser cutter
单词：laser cutter 相关文章
Chapter 27 A story Once upon a time in an old forest, there was a poor wood cutter cutting wood by the lake. One day, his axe accidently fell into the lake. The poor wood cutter didnt know how to swim, so he could do nothing but sat by the lake and p
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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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Now, the VOA Learning English program Words and Their Stories. On this program, we explore words and expressions in the English language. We also explain how they developed and how English speakers use them today. We try really hard to make this prog
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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
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Bob McConnell, a retired engineer, set up a new wireless router in his home this year to get faster Internet speeds. Instead, he got the opposite, with his iPad often getting no wireless connection in his bedroom 为了获得更快的上网速度，退
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