标准线
地图投影中没有变形的线，通常是承影面与地球表面的切线或割线。方位投影一般只有一条标准线或一个标准点；而圆柱投影和圆锥投影则可以有一条或两条标准线。在正轴投影中，切线或割线与纬线一致，所以标准线都是纬线，故称为标准纬线。
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contributed at 2011-12-26
Classification(s)
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Earth System(in Chinese) Cartography and surveying
Detailed Description
| English |
|---|
| Name | standard line |
| Chinese |
|---|
| Name | 标准线 |
| Description | 地图投影中没有变形的线，通常是承影面与地球表面的切线或割线。方位投影一般只有一条标准线或一个标准点；而圆柱投影和圆锥投影则可以有一条或两条标准线。在正轴投影中，切线或割线与纬线一致，所以标准线都是纬线，故称为标准纬线。 |
How to Cite
NNU_Group (2011). 标准线, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/02e65abc-2d3a-43e4-8d55-35644735c0d1
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