天气预报15天查询> 其他> 经线长度约多少千米

经线长度约多少千米

更新时间: 2020-10-31 00:00:00     

经线的长度约为20037km。经线,也称为“子午线”,是地球表面连接南、北两极,并且垂直于赤道的弧线。经线和纬线一样是人类为度量方便而假设出来的辅助线,定义为在地球仪表面连接南北两极并垂直于纬线的半圆。地球上一切通过地轴的平面与地面相截而成的大圆称为“经线圈”。每一根经线都有其相对应的数值,称为经度。经线指示南北方向。

关键词: 经线 长度 多少 千米

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-2141081/ | 耗时:0.0977 s | 内存:1.89 MB | 查询:5 | 缓存读取:4 写入:1 | 加载文件:23
SELECT id,title FROM weather_news ORDER BY id DESC LIMIT 10
select * from tbl_Articles WHERE ArticleID=2141081 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2141081 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2141081 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(107833,2405786,2588830,2935605,2717522,1051803,2534452,1421927,3302942,2003150,2365034,2381685,3186783,1466963,161302,1041954,3210557,2940825,2598007,294642,2872471,2219182,329652,1701016,1306727,1128565,2845985,2529267,1121004,1048000) ORDER BY field (ArticleID,107833,2405786,2588830,2935605,2717522,1051803,2534452,1421927,3302942,2003150,2365034,2381685,3186783,1466963,161302,1041954,3210557,2940825,2598007,294642,2872471,2219182,329652,1701016,1306727,1128565,2845985,2529267,1121004,1048000)