close-up view of a transparent mini drone prototype with visible internal components - 無線搖控器 個影片檔及 b 捲影像00:09
engineer man or worker, people, using a drone to survey. solar panels or solar cell on the roof in farm. - 無線搖控器 個影片檔及 b 捲影像00:14
engineer man or worker, people, using a drone to survey. solar panels or solar cell on the roof in farm. - 無線搖控器 個影片檔及 b 捲影像00:09