天气预报 > 其他 > 地球上北纬40度的纬线长度为
地球上北纬40度的纬线长度为
更新时间: 2020-10-01 00:00:00  

基本释义:

地球表面某点随地球自转所形成的轨迹,叫做纬线。所有的纬线都相互平行,并与经线垂直,纬线指示东西方向。经线和纬线是人们为了在地球上确定位置和方向,在地球仪和地图上画出来的,地面上并没有画着经纬线。

关键词: 地球 北纬 纬线 长度

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