BIM

ifc rel defines by type

名称	ifc rel defines by type
领域	IFCROAD
URL	http://cbims.org.cn/allscope/IFCROAD-IfcRelDefinesByType
分类编码	IfcRelDefinesByType
父类	ifc root ifc rel defines ifc relationship
子类
等价类	IFCRAIL:ifc rel defines by type