环地平弧
- 网络circumhorizontal arc; circumhorizon arc; circumhorizonal arc
环地平弧环地平弧
circumhorizontal arc
此应为环地平弧（circumhorizontal arc）。发消息 LZ看到横在天上的彩虹，一定要拍下来发给你爱的人哦，不然就来不及了 发 …
circumhorizon arc
环地平弧（Circumhorizon arc）环天顶弧的姊妹，只有太阳高于58度时才会出现。
circumhorizonal arc
36测量学_馆档网 ... "觇板罗盘仪"," circumferentor" "日承,环地平弧"," circumhorizonal arc" "月球周围"," circumlunar" ...