19th National Science and Technology Week starts

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

#CHINA-TECHNOLOGY-WEEK (CN)

A child participates in a glow discharge experiment at the Binzhou Science and Technology Museum in Binzhou, east China's Shandong Province, May 19, 2019. The 19th National Science and Technology Week is held from May 19 to 26. (Xinhua/Zhang Chunfeng)

   Prev 1 2 3 Next  

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
亚洲国产91麻豆 | 香港三级日本三级人妇精品 | 日韩欧美国产一区二区三区免费 | 亚洲日韩精品欧美国产动漫第一页 | 日本不卡高清视频v中文字幕 | 日本三级香港三级人妇99视 |