[IfcRelContainedInSpatialStructure.RelatedElements property 相关元素 public IfcCollection<IfcProduct> RelatedElements { get; set; } 也可以看看 class IfcCollection<T> class IfcProduct class IfcRelContainedInSpatialStructure 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
