About: http://webisa.webdatacommons.org/257226541

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	In (a), Vs is a sustain voltage of the sustain discharge period, and ??Vs is a voltage change that occurs when a sustain discharge current flows at the time of discharge.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com