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