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