[IfcMaterialLayer.LayerThickness property 层厚度 public IfcNonNegativeLengthMeasure LayerThickness { get; set; } 也可以看看 class IfcNonNegativeLengthMeasure class IfcMaterialLayer 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
