About: http://webisa.webdatacommons.org/313545019

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	Among the techniques employed to solve this problem are visual means, such as trachometers or lights, or vibration sensing means which depend upon the amplitude of signals generated by the machinery.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com