About: http://webisa.webdatacommons.org/245722167

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	Preferably, the center frequency of the excitation signals is within the 1 to 15 MHz range, such as 2 MHz, and accounts for the frequency response of the transducer 14.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca