亚洲91视频,国产91网,久久久久久久久久久久久久久国产,亚洲一区二区三区日本久久九,亚洲日本久久,国产精品久久久99,亚洲欧美一区二

left corner left corner
China Daily Website

Youth devoted to unmanned aerial vehicle research

Updated: 2013-05-03 21:05
( chinadaily.com.cn)
Youth devoted to unmanned aerial vehicle research 

The combination photo shows an air vehicle flies over a park while taking aerial photos (above) and photos it took in Changchun, Northeast China's Jilin province, May 3, 2013. [Photo/Xinhua] 

8.03K
...
...
...