中文字幕无码久久人妻_中国无码a一级刺激片_国产综合色产在线观看_色多黄片资源2020

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)

Students have lunch at No.11 Primary School of Tongren City in 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