条件筛选
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How are illegal opium poppy plantings investigated? Taihe County deploys unmanned aerial survey aircraft to crack down
To tackle illegal opium poppy cultivation, Taihe County deploys unmanned aerial survey aircraft to crack down
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Agricultural machinery enters a new era of unmanned operation
Unmanned tractors enter the fields On April 24, on the land west of Chengezhuang Village, Henanzhai Town, Miyun County on the outskirts of Beijing, a large tractor was at work. Unlike an ordinary tractor, the operator in the cab sat in the seat without needing to operate it by hand, and the tractor