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