“专业网刊升级转型及期刊精品库建设”研讨会

 F190101

深海多位点着陆器与漫游者潜水器系统研究

 S190104

G20 Entrepreneurship Roundtable

 T191002

CIE2019 中国IT教育论坛

 F191101

Tsinghua Sanya Alumni Association annual meeting activity

 S191203

International Culture and Education Exhibition(ICEE)

 S191205