精品视频一区二区三区四区,97国产色,国产深夜视频,午夜男人网站,成人99视频,成人1区2区3区,91精品国产成人观看

Students attend science popularization course in China's school

Source:Xinhua| 2018-11-08 15:18:33|Editor: ZD
Video PlayerClose

CHINA-JIANGXI-NANCHANG-SCIENCE POPULARIZATION COURSE(CN)

A student experiences 3D printing technology at Chaoyang Elementary School in Nanchang, capital of east China's Jiangxi Province, Nov. 7, 2018. (Xinhua/Hu Chenhuan)

   1 2 3 Next  

KEY WORDS: Students
EXPLORE XINHUANET
010020070750000000000000011100001375919881