About: http://webisa.webdatacommons.org/214838688

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 mass spectrometer of claim 13 wherein the voltage applied to the ion optical element is a voltage including a DC voltage and a time varying voltage and wherein the DC voltage varies with mass.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es