화염방사기 달린 드론 VIDEO: Drone with a flamethrower to clear debris from power lines.
산업과학 Construction,Science/환경안전 Environment,Safety2018. 6. 20. 16:14
Drone with a flamethrower to clear debris from power lines.
전기줄에 걸린 쓰레기 소각에 최적
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