[IfcPropertyDefinition.HasAssociations property HasAssociations public IfcCollection<IfcRelAssociates> HasAssociations { get; } 也可以看看 class IfcCollection<T> class IfcRelAssociates class IfcPropertyDefinition 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
