[IfcRelFillsElement.RelatingOpeningElement property RelatingOpeningElement public IfcOpeningElement RelatingOpeningElement { get; set; } 也可以看看 class IfcOpeningElement class IfcRelFillsElement 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
