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