0 Comment(s)
Print
E-mail China.org.cn, June 2, 2021
9. Tianjin
A technician tests an intelligent recognition optical system at the Research Center for Composite Manufacturing and Intelligent Identification, Tsinghua University Tianjin Research Institute for Advanced Equipment, in Tianjin, Feb. 24, 2021. [Photo/Xinhua]
78dbb9b8-c67f-49b4-9686-9624a62d05a7.jpg)