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