2018 GGHS Team 1
DH 교육용 위키
목차
Introduction
A comparison of the Technology of Goryeo and Foreign Countries
What is a cannon?
The origin of the invention of metal types
Body
European and Chinese cannon
The cannon of the Goryeo Dynasty
Conclusion
Modern technology
3D Printer
Today, a three-dimensional printer(3D - printer) has been created combining traditional printing technology with the wisdom of our ancestors. Three-dimensional printing is a manufacturing technique that produces three-dimensional objects by spraying a continuous layer of matter. By using this, they were able to create objects in three dimensions, not in two dimensions.
Reference
- ↑ The is is the reference
- ↑ 프리미엄 조선|1000년간 가장 중요한 발명은 금속활자?|공미라(세계사 저술가)| 2014.02.21.|http://premium.chosun.com/site/data/html_dir/2014/02/20/2014022004605.html
