enum IFCDerivedUnitEnum { AngularVelocityUnit, CompoundPlaneAngleUnit, DynamicViscosityUnit, HeatFluxDensityUnit, IntegerCountRateUnit, IsothermalMoistureCapacityUnit, KinematicViscosityUnit, LinearVelocityUnit, MassDensityUnit, MassFlowRateUnit, MoistureDiffusivityUnit, MolecularWeightUnit, SpecificHeatCapacityUnit, ThermalAdmittanceUnit, ThermalConductanceUnit, ThermalResistanceUnit, ThermalTransmittanceUnit, VaporPermeabilityUnit, VolumetricFlowRateUnit, RotationalFrequencyUnit, Toruquenit, MomentOfInertiaUnit, LinearMomentUnit, LinearForceUnit, PlanarForceUnit, ModulusOfElasticityUnit, ShearModulusUnit, LinearStiffnessUnit, RotationalStiffnessUnit, ModulusOfSubGradeReactionUnit, AccelerationUnit, CurvatureUnit, HeatingValueUnit, IonConcentrationUnit, LuminousIntensityDistributionUnit, MassPerLengthUnit, ModulusOfLinearSubGradeReactionUnit, ModulusOfRotationalSubGradeReactionUnit, PhUnit, RotationalMassUnit, SectionAreaIntegralUnit, SectionModulusUnit, SoundPowerUnit, SoundPressureUnit, TemperatureGradientUnit, ThermalExpansionCoefficientUnit, WarpingConstantUnit, WarpingMomentUnit, UserDefined };