guest Moderator 管理成员 注册 2002-10-07 消息 402,581 荣誉分数 76 声望点数 228 2019-08-08 #1 The number of mid-air conflicts between drones and crewed aircraft rose in the first half of this year in most parts of Canada, with Ontario leading the way by far, according to new statistics obtained by CBC News. 查看原文...
The number of mid-air conflicts between drones and crewed aircraft rose in the first half of this year in most parts of Canada, with Ontario leading the way by far, according to new statistics obtained by CBC News. 查看原文...
