Unmanned aircraft hoped to bring cleaner upper

Updated: 2014-03-10 10:56

(chinadaily.com.cn)

Unmanned aircraft hoped to bring cleaner upper

A technician prepares the aircraft for a test to disperse fog in Jingzhou city, Hubei province on Saturday. [Photo/icpress.cn]

Unmanned aircraft hoped to bring cleaner upper

Unmanned aircraft hoped to bring cleaner upper Unmanned aircraft hoped to bring cleaner upper

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