| 接口 | 说明 |
|---|---|
| IfcDerivedMeasureValue |
A select type for selecting between derived measure types.
|
| IfcMeasureValue |
A measure value is a value as defined in ISO 31-0 (clause 2).
|
| IfcSimpleValue | |
| IfcUnit |
Definition from ISO/CD 10303-41:1992:
A unit is a physical quantity, with a value of one,
which is used as a standard in terms of which other quantities are expressed.
|
| IfcValue |
A select type for selecting between more specialised select types IfcSimpleValue, IfcMeasureValue and
IfcDerivedMeasureValue.
|
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