<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31307651</termId><termName>audio oscillators</termName><termType>PT</termType><termNote><![CDATA[ Electronic devices for generating oscillatory electric currents, or for generating electromagnetic waves by means of such currents, particularly in the audible frequency range. ]]></termNote><termCreatedDate>2026-03-30 20:22:47</termCreatedDate><relation><relationType>UF</relationType><termId>31307652</termId><termName>audio oscillator</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31307653</termId><termName>oscillators, audio</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31299038</termId><termName>sound devices</termName><termType>PT</termType></relation></term>  </Zthes>