英语听力

听力入门英语演讲VOA慢速英语美文听力教程英语新闻名校课程听力节目影视听力英语视频

CNN英语新闻:史密森学会应用3D打印技术开创博物馆新纪元

lily85 于2014-12-12发布 l 已有人浏览
增大字体 减小字体
接下来我们关注正在下跌的天然气价格,看起来价格会一周持续走低。去年美国全国平均每加仑汽油是3.26美元。现在则是2.67美元。而分析师预计明年春天将跌破2美元。原因何在?
    小E英语欢迎您,请点击播放按钮开始播放……

Next today, gas prices, they are free falling, and it looks like they are only going to get lower. The U.S. national average for a gallon of gas was 3.26 one year ago. It's about 2.67 now. By next spring, analysts predict it will be below two bucks a gallon. Why?

U.S. oil production, for one thing, it's booming. Even though a method called hydraulic fracturing or fracking is controversial, it's yielding a lot of oil. Also, the price of crude oil, the biggest factor in the price of gas, it's dropping.There's less demand for crude in Asia and Europe where economies have slowed down. All this is good for us, drivers, it's not for countries whose economies depend largely on crude oil sales.

The Smithsonian Institution, the largest museum complex in the world, has a new way for you to wrap your mind and your hands around history. It's using three-dimensional imaging to scan everything from Abraham Lincoln's facial structure to a T-Rex toe. And if you have access to a 3-D printer, you can use it to create replicas of priceless and matchless museum artifacts.

It's a-look at the crass commercialization part of this, but we are a few years away from like really, really good Halloween costumes.

It's up and coming. Yeah.

How long does the president have to sit for this?

It took from the minute he walked into the room until we were done with the process seven minutes.

Seven minutes.

So here we've lured Jake Tapper out of his natural habitats, and we are scanning him. So, what we have here is a handheld 3D scanner that is part of the technology that we use when we actually were able to scan the president of the United States.

What it's doing is it's projecting a pattern onto the subject, and then cameras are actually tracking the way that that projection deforms. And that's how you get a 3D image. And we are actually collecting about 16 3D images per second.

What 3D capture really represents is scientific accurate measurements, so for us, it's a way to document our collections and it's a way to engage the public in these collections and there's two life masks to tell an incredibly compelling story about how the Civil War aged that man.

And now that we have that data available, and we allow schools to download it and 3D print from that data, it's a completely new way for students to connect to history. They can 3D print a Lincoln life mask, they can hold it in their hands, they can trace the deep froze on Lincoln's face to understand the impact the history that man lived through had on him.
 

 1 2 下一页

分享到

添加到收藏

英语新闻排行