久久电影免费精品,亚洲日韩在线观看,精品大全在线看,a√天堂98国产在线

  • 

    <strong id="opm3m"><u id="opm3m"></u></strong>
    • 

    


 


    




    



    

    



    

    

    

    
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