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经线是如何划分的
更新时间: 2020-11-03 00:00:00  

经线概念:在地球仪表面连接南北两极并垂直于纬线的半圆;形状:半圆形;方向:经线指示南北方向;长度:赤道的一半,长度约为20037km连接南北两极的并同纬线垂直相交线,也称子午线。经线指示南北方向;所有经线都呈半圆状且长度相等;两条正相对的经线形成一个经线圈;任何一个经线圈都能把地球平分为两个半球

关键词: 经线 如何 划分

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