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)

Visitors view a model of high-speed cargo train with a top speed exceeding 250 km per hour 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 Next  

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
亚洲综合自拍一区首页 | 夜夜爱夜夜操国产精品 | 五月天在线视频婷婷播放 | 欧美精品剧情一区二区三区 | 亚洲一区二区视频在线观看 | 欧美丝袜中文更新 |