求翻译：映射函数′把一个概念映射为△′的一个子集，把关系映射为△′×△′的一个子集。如概念A的语义定义为：A′∈△′，关系R的语义为R′∈△′×△′。有关ESDCM中基于DL的OWL类及公理的构造算子的分析与描述如图5所示。是什么意思？

Mapping function ' maps to ' a concept a subset of, mapped to a subset of ' x ' relationship. As a semantic definition of the concept: a ′∈ ′, ′∈ of semantic relation r r ′ x '. About ESDCM of OWL DL classes and axiom-based structural analysis and description of the operator as shown in Figure 5.