About: http://webisa.webdatacommons.org/443668451

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	The waveguide 46 is formed of metal, and it is appropriate that the wall in the tube is coated with novel metal, such as gold or silver, in order to reduce a conductor loss due to current or to prevent corrosion.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com