[IfcDerivedProfileDef.Operator property 运算符 public IfcCartesianTransformationOperator2D Operator { get; set; } 也可以看看 class IfcCartesianTransformationOperator2D class IfcDerivedProfileDef 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]