直徑將近兩米,油動直驅引擎,沈陽的這家企業生產的無人機能續航4小時,最大載重超200斤。這款名叫“大壯”的無人機和經改裝的消防車“飛牛”一起在應急救援中屢立戰功。
記者:張逸飛、楊青
新華社音視頻部制作
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