About: http://webisa.webdatacommons.org/216419330

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A hydraulic, pneumatic or other device is used for either manually and/or automatically adjusting the gap between the rollers to alter the pressure and action of the abrasive roller over the length of the substrate being processed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com