[IfcSurfaceStyleLighting.TransmissionColour property 传输颜色 public IfcColourRgb TransmissionColour { get; set; } 也可以看看 class IfcColourRgb class IfcSurfaceStyleLighting 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
