“专题要素分类分级”的概念、定义、翻译、参考文献-科学参考

单词	专题要素分类分级
释义	专题要素分类分级 Encyclopedia 理学专题要素分类分级释 classification of thematic map elements专题要素分类分级在编制专题地图时，为了有效地描述专题要素的属性特征，将制图对象的大量实体或现象抽象概括成少量群类和等级，以揭示出物体、现象在地理空间上发展变化的定性和定量规律。
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科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。