不久前,英国《经济学人》推出“第三次工业革命”封面文章。文章通过一个锤子例子解释3D打印与以往工业制造的区别:3D打印通过层层叠加材料来制造产品,无须敲击、弯折与切削等工序。美国“3D系统”公司曾用打印机打印了一把做工精细的锤子。而在传统工业模式下,一家工厂根据个人设计制造一把锤子,可能贵得离谱,但生产数千把, Not long ago, the British “Economist” launched the “Third Industrial Revolution” cover article. The article illustrates the difference between 3D printing and previous industrial manufacturing with a hammer example: 3D printing builds products by layers of material without the need for beating, bending and cutting. America “3D Systems ” company used a printer to print a fine hammer. In the traditional industrial mode, a factory may create a hammer according to personal design, which may be prohibitively expensive, but produce thousands,