发表于:2018-11-29 / 阅读(117) / 评论(0) 分类 电信英语

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Engineers are always plugging away to get better energy efficiency out of our products -- like cars that guzzle less gas or light bulbs that burn brighter on f

发表于:2018-12-24 / 阅读(47) / 评论(0) 分类 Scientific American(八)月

Free software is the first battle in the liberation of cyberspace. Who controls your computer? Is it you or is it some big company thats really controlling it? Well, what is a computer? A computer is a universal machine. It will do any computation yo

发表于:2018-12-28 / 阅读(60) / 评论(0) 分类 英语语言学习

Engineers are always plugging away to get better energy efficiency out of our products -- like cars that guzzle less gas or light bulbs that burn brighter on fewer watts. But even if we replaced all today's bulbs with energy-sipping LEDs, the world m

发表于:2019-01-02 / 阅读(78) / 评论(0) 分类 60秒科学

Science and Technolgy. 科技。 Visible-light communication. 可见光通信。 Tripping the light fantastic. 与光共舞。 A fast and cheap optical version of Wi-Fi is coming. 一个高速而廉价的光学Wi-Fi即将问世。 AMONG the many new

发表于:2019-01-26 / 阅读(58) / 评论(0) 分类 经济学人科技系列

Science and technology 科学技术 Visible-light communication 可见光通信 Tripping the light fantastic 与光共舞 A fast and cheap optical version of Wi-Fi is coming 一个高速而廉价的光学Wi-Fi即将问世 AMONG the many new gadgets u

发表于:2019-02-06 / 阅读(62) / 评论(0) 分类 经济学人科技系列