实体定义
属性定义
序号
属性名称
中文解释
数据类型
必填
GfcRoot
GfcRelationShip
1
Name
GfcLabel
GfcRelConnects
GfcRelCoversBldgElements
2
RelatingBuildingElement
GfcElement
√
3
RelatedCoverings
LIST [0:?] OF
GfcElement
继承关系
GfcRoot
└
GfcRelationShip
└
GfcRelConnects
└GfcRelCoversBldgElements