19th National Science and Technology Week starts

Source: Xinhua| 2019-05-20 07:47:25|Editor: Liangyu
Video PlayerClose

#CHINA-TECHNOLOGY-WEEK (CN)

A visitor participates in an electrical conduction experiment at the Binzhou Science and Technology Museum in Binzhou, east China's Shandong Province, May 19, 2019. The19th National Science and Technology Week is held from May 19 to 26. (Xinhua/Zhang Chunfeng)

   Prev 1 2 3  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001380726341
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
中文字幕乱码在线视频网站 | 亚洲午夜福利片 | 一色屋精品视频在线观看 | 在线观看国产日韩欧美 | 最新AV网址免费在线观看 | 亚洲一区二区三区和欧美四区 |