[IfcCartesianTransformationOperator3D.Axis3 property Axis3 public IfcDirection Axis3 { get; set; } 也可以看看 class IfcDirection class IfcCartesianTransformationOperator3D 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]