PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Generally, a laser apparatus mainly comprises a laser oscillator, an optical transmission system for transmitting and condensing light, a device for driving a work, auxiliary equipment and a control unit for controlling these component parts.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com