[IfcMaterialLayer.LayerThickness property 层厚度 public IfcPositiveLengthMeasure LayerThickness { get; set; } 也可以看看 class IfcPositiveLengthMeasure class IfcMaterialLayer 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
