<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31415840</termId><termName>acetylene burners</termName><termType>PT</termType><termNote><![CDATA[ Burners used for controlled burning of acetylene gas. ]]></termNote><termCreatedDate>2026-03-30 20:51:53</termCreatedDate><relation><relationType>UF</relationType><termId>31415841</termId><termName>acetylene burner</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31415842</termId><termName>acetylene tips</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31415843</termId><termName>burners, acetylene</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31379741</termId><termName>burners by fuel type</termName><termType>PT</termType></relation></term>  </Zthes>