Robotics, 3-D Printing, Drones Lead 2015 Tech Innovations The waning years advances in computer hardware and software, mechanical devices, sensors and artificial intelligence brought the world another step closer to the robotic future. Electric cars

发表于:2018-11-29 / 阅读(108) / 评论(0) 分类 VOA标准英语2015年(十二月)

This is the VOA Special English Economics Report. When we print something, a flat page comes to mind. For example, you might use a photocopier. (SOUND) Photocopiers print in two dimensions. Now, imagine how this would work for three dimensions. A mac

发表于:2018-12-07 / 阅读(31) / 评论(0) 分类 2010年VOA慢速英语(十)月

This is the VOA Special English Economics Report. Sometimes, financial news can be hard to understand. Here, a former official of Goldman Sachs investment bank explains what his group did before the financial crisis. JOSH BIRNBAUM: Our desk began to

发表于:2018-12-07 / 阅读(75) / 评论(0) 分类 2010年VOA慢速英语(四)月

This is the VOA Special English Economics Report. Usually we think about material qualities when we think about the pleasure we will get from a product. When something costs a lot, we might think about all the fine work that went into it. But can pr

发表于:2018-12-15 / 阅读(26) / 评论(0) 分类 VOA慢速英语2008年(二)月

There are more than 26 thousands casting companies in China, accounting for half of all the global manufacturers of casting products. But the traditional method of handmaking castings is heavily reliant on human resources and energy, and can produce

发表于:2019-01-19 / 阅读(79) / 评论(0) 分类 2018CRI中国国际广播电台

An employee carefully scans a man standing still behind two photographic lamps with a gun-like scanner in his hand. The whole process takes approximately 10 minutes. After loading the data into the computer, the rest work is left to the 3-D printing

发表于:2019-02-14 / 阅读(54) / 评论(0) 分类 英闻天下