[IfcStructuralMember.ConnectedBy property ConnectedBy public IfcCollection<IfcRelConnectsStructuralMember> ConnectedBy { get; } 也可以看看 class IfcCollection<T> class IfcRelConnectsStructuralMember class IfcStructuralMember 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]