<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31372348</termId><termName>friction welding</termName><termType>PT</termType><termNote><![CDATA[ A process by which thermoplastic materials are softened and welded together with heat produced by friction. ]]></termNote><termCreatedDate>2026-03-30 20:40:25</termCreatedDate><relation><relationType>UF</relationType><termId>31372349</termId><termName>welding, friction</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31341612</termId><termName>welding</termName><termType>PT</termType></relation></term>  </Zthes>