| 类 | 说明 |
|---|---|
| IfcMaterial |
A homogenious substance that can be used to form elements.
|
| IfcMaterialClassificationRelationship |
Relationship assigning classifications to materials.
|
| IfcMaterialLayer |
A single and identifiable part of an element which is constructed of a number of layers (one or more).
|
| IfcMaterialLayerSet |
A designation by which materials of an element constructed of a number of material layers is known and through
which the relative positioning of individual layers can be expressed.
|
| IfcMaterialLayerSetUsage |
Determines the usage of IfcMaterialLayerSet in terms of its location and orientation relative to
the associated element geometry.
|
| IfcMaterialList |
A list of the different materials that are used in an element.
|
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