国产一级免费电影,国产自产在线视频一区,国产一区亚洲,久久国产精品视频,日本美女天天操b,九色激情,成年轻人网站色直接看

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)

Aerial photo shows a staff member picking 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)

   1 2 3 4 5 6 7 8 9 Next  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001380786321