Highlights of 19th National Science and Technology Week in Beijing

Source: Xinhua| 2019-05-21 22:37:55|Editor: Yamei
Video PlayerClose

CHINA-BEIJING-NATIONAL SCIENCE AND TECHNOLOGY WEEK (CN)

A staff member introduces an intelligent obstacle detection system to visitors in Beijing, capital of China, May 21, 2019. The 19th National Science and Technology Week is held from May 19 to 26. In Beijing, the main venue of the event, more than 410 major scientific and technological achievements in aerospace, artificial intelligence, information technology and biotechnology are displayed. (Xinhua/Ren Chao)

   Prev 1 2 3 4 5 6  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011103261380778161
国产无码在线观看免费在线,37pao国产成视频,日韩一区二区视频在线,国产国产人免费人成免费视频麻豆
日本色一区二区三区 | 亚洲精品第一页在线 | 亚洲制服丝袜在线二区 | 亚洲日韩最新一区二区三区 | 亚洲国产精品日韩AV专区 | 欧美性爱在线免费观看 |