<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31410492</termId><termName>gas welding</termName><termType>PT</termType><termNote><![CDATA[ Any method of welding that uses burning gas as a source of heat. ]]></termNote><termCreatedDate>2026-03-30 20:50:22</termCreatedDate><relation><relationType>UF</relationType><termId>31410493</termId><termName>welding, gas</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31372350</termId><termName>fusion welding</termName><termType>PT</termType></relation></term>  </Zthes>