A measure of the number of cycles that an item revolves per time period.
Applicable units are those of quantitykind:RotationalVelocity
http://standards.buildingsmart.org/IFC/DEV/IFC4_2/FINAL/HTML/link/ifcrotationalfrequencymeasure.htm
IfcRotationalFrequencyMeasure is a measure of the number of cycles that an item revolves in unit time. Usually measured in cycles/s.