About: http://webisa.webdatacommons.org/146258813

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	Mounted in the discharge chamber 94 is a cylindrical discharge piston 150 which is formed from a suitable metal, such as aluminum, and has a very small clearance, such as .0045, with the adjacent wall of the discharge chamber 94.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com