A robot is used in the 3rd mine-sweeping mission along the China-Vietnam border, following ones from 1992 to 1994 and from 1997 to 1999 respectively. [Photo/81.cn]
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A robot is used in the 3rd mine-sweeping mission along the China-Vietnam border, following ones from 1992 to 1994 and from 1997 to 1999 respectively. [Photo/81.cn] |