加香港城大研創水印 (IMAGE) City University of Hong Kong Caption 香港城大的劉錦川教授(左)和張天隆博士(右)討論如何以3D打印技術設計合金 Credit City University of Hong Kong Usage Restrictions Image must be used with appropriate caption and credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.