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<http://webisa.webdatacommons.org/329008592>	<http://www.w3.org/ns/prov#value>	"Logic 512 may read a sensor such as a tachometer to determine rotation speed of the fan blades and control the airflow stabilization members accordingly." .
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<http://webisa.webdatacommons.org/329008592>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .