实体定义
聚合关系（GfcRelAggregates）。
属性定义
序号属性名称中文解释数据类型必填
GfcRoot
GfcRelationShip
1NameGfcLabel
GfcRelDecomposes
GfcRelAggregates
2RelatingObjectGfcObject√
3RelatedObjects子对象LIST [0:?] OF GfcObject
继承关系
GfcRoot
  └GfcRelationShip
    └GfcRelDecomposes
      └GfcRelAggregates