Semantic information modeling (ontology) moves beyond structural, logical data modeling in the sense that it models semantics (meaning) and relationships of data.
语义信息建模(本体)不属于逻辑数据建模，它对数据的语义(含义)和关系建模。
The depiction of various structural relationships between objects in rendering space enhances the understanding of the data set, and extends roles of volume rendering in volume data analysis.
在绘制空间对物体之间的不同关系的描述增强了用户对体数据的理解，并拓展了体绘制在体数据分析中的功能。
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