Small drones on private land do not need permission from air traffic controllers - big drones do.
So Germany seems to be entering a legal grey area - it is not clear when the flight of a drone may become so extensive that the wider authorities need to intervene, Stephen Evans reports.
【德国铁路公司将试用无人机监控涂鸦行为】相关文章:
★ Twitter会降低学生的考试成绩,那对其他人有什么影响
最新
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15