[IfcApprovalActorRelationship.Role property 角色 public IfcActorRole Role { get; set; } 也可以看看 class IfcActorRole class IfcApprovalActorRelationship 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
