世界上首座3D打印桥亮相西班牙 。From toys to candies, 3-D printing (打印) helps us make many things. And now it has helped make a new thing: a bridge! This is the first time people have used 3-D printing to build a building.
中报二十一世纪(北京)传媒科技有限公司版权所有,未经书面授权,禁止转载或建立镜像。 主办单位:中国日报社 Copyright by 21st Century English Education Media All Rights Reserved 版权所有 复制必究 网站信息网络传播视听节目许可证0108263 京ICP备2024066071号-1京公网安备 11010502033664号