www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

English 中文網 漫畫網 愛新聞iNews 翻譯論壇
中國網站品牌欄目(頻道)
當前位置: Language Tips> Audio & Video> 新聞播報> Special Speed News VOA慢速

3D printers are here—and they make more than you think

[ 2010-10-29 15:17]     字號 [] [] []  
免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

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 machine prints layers of material—usually plastic—one on top of the other. The layers are very thin—usually one-fifth or one-tenth of a millimeter. The layers then combine to form a solid object.

There are many versions of this kind of technology. But the basic idea is the same for most 3-D printers. The process is called additive fabrication.

These 3-D printers have become powerful tools for product designers. Computer-aided design programs use software to direct the printer. Designers can then create a solid model in a short time and easily make changes and tests.

The 3-D printing technology was first developed in the 1980s. But high cost put them out of the reach of many researchers and businesses. Early printers were limited. High cost and limited uses meant the 3-D printer market was small.

Now, lower-cost printers are available to a much wider market, including small businesses and individuals.

In January, the global technology company Hewlett-Packard agreed to sell 3-D printers manufactured by Stratasys. Stratasys has made 3-D printers for years. Last year, it introduced one for less than 15,000 dollars.

More companies are using 3-D printing to directly manufacture some products. For example, Freedom of Creation, based in Amsterdam, the Netherlands, prints furniture and art. Bespoke Innovations in San Francisco, California wants to design and print artificial limbs. Co-founder Scott Summit says these prosthetic limbs can be designed exactly for a patient's body for less money than existing products.

But 3-D printing still has limits. For example, metals are more difficult to print than plastics. However, airplane maker Boeing prints some airplane parts. And printers are being used to create some rare parts for old machines.

For people interested in new technology, a New York based company, Makerbot, sells kits to people who want to build a small 3-D printer. Some kits cost less than 1,000 dollars.

And that's the VOA Special English Economics Report, written by Mario Ritter. For transcripts and MP3s go to voaspecialenglish.com. And follow us on Facebook, Twitter, YouTube and iTunes at VOA Learning English. I'm Steve Ember.

prosthetic: 義肢的,假體的

Related stories:

'Put-backs,' 'robo-signers' put new pressure on US housing market

15 months out of recession, but not feeling like it

Basel plan aims to force banks to increase capital

Obama urges steps to strengthen economy

(來源:VOA 編輯:陳丹妮)

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
 

關注和訂閱

人氣排行

翻譯服務

中國日報網翻譯工作室

我們提供:媒體、文化、財經法律等專業領域的中英互譯服務
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
主站蜘蛛池模板: 欧美精品综合一区二区三区 | 成年女人毛片免费视频永久vip | 久久er热这里只有精品免费 | 91影视永久福利免费观看 | 国产欧美日韩另类 | 91亚洲国产成人久久精品网址 | 性一级片 | 亚洲精品不卡久久久久久 | 亚洲免费视频播放 | 亚洲视频免费播放 | 欧美日本免费观看αv片 | 亚洲成人高清 | 精品成人免费一区二区在线播放 | 7799国产精品久久久久99 | 久久99国产精品 | 亚洲国产精品影院 | 欧美成免费 | 美女又黄又免费的视频 | 国产成人啪精品视频免费网 | 真人毛片 | 日韩欧美不卡一区二区三区 | 亚洲黄色三级网站 | 欧美aaaaa一级毛片在线 | 成人影院在线免费观看 | 欧美一区二区三区在线播放 | 成人韩免费网站 | 99热官网 | 美国亚洲成年毛片 | 日韩欧美在线观看视频 | 欧美日韩精品一区二区三区 | 天天看片天天爽 | 欧美在线1 | 日本三级成人中文字幕乱码 | 亚洲美女精品视频 | 国产精品亚洲专区在线播放 | 成人永久免费视频网站在线观看 | 久久国产精品岛国搬运工 | 精品国产午夜久久久久九九 | 国产精品久久在线 | 玖玖精品视频在线观看 | 精品三级国产 |