About: http://webisa.webdatacommons.org/64696561

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	Piezoelectric, dielectric and electrostatic devices for frequency control, selection and detection, such as resonators, filters, oscillators and sensors, are key components in various pieces of electrical equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	iec.ch