多选题移动通信所用的电子地图必须包括()等对电波传播有影响的地理信息,是传播模型修正的重要基础数据A地形高度B地物C街道矢量D建筑物
多选题
移动通信所用的电子地图必须包括()等对电波传播有影响的地理信息,是传播模型修正的重要基础数据
A
地形高度
B
地物
C
街道矢量
D
建筑物
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