2018亚洲天天射,澳门黄色电影免费三级大毛片,337p欧洲大胆艺术,男人天堂色男人色天堂,三级黄色网站,91亚洲欧美,亚洲欧美日本另类激情

Big-data based monitoring system helps guarantee food safety for students in Tongren

Source: Xinhua| 2019-05-22 07:38:05|Editor: mingmei
Video PlayerClose

CHINA-GUIZHOU-TONGREN-BIG DATA-FOOD SAFETY (CN)

A staff member shows newly-picked vegetables in Tongren, southwest China's Guizhou Province, May 21, 2019. Tongren City has established a monitoring system applying new technologies of big data to trace food from farming to dining table, an effort to guarantee food safety for students. (Xinhua/Ou Dongqu)

   Prev 1 2 3 4 5 6 7 8 9 Next  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001380786321