About: http://webisa.webdatacommons.org/450227362

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	FIG. 17 is an alternative embodiment of the present probe having back-to-back active surfaces which move in spherical coordinates behind a forward looking acoustic window.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com