However, instead of packaging specializations of elements for topic content, you specialize elements for map content — typically the topicref.

但是这不是为主题内容打包元素的专门化，而是专门化映射内容的元素，通常是topicref元素。

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To determine map content is the first work for thematic map design.

确定专题地图的内容是专题地图设计的一项首要工作。

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Its contents cover these aspects as the mathematical basis of the map, the map content elements as means of indication and map decoration.

地图的数字基础、地图内容各要素的表示方法和地图整饰。

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Its contents cover these aspects as the mathematical basis of the map, the map content elements as means of indication and map decoration.

地图的数字基础、地图内容各要素的表示方法和地图整饰。

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