<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31457275</termId><termName>gray iron</termName><termType>PT</termType><termNote><![CDATA[ Pig or cast iron containing much graphite. ]]></termNote><termCreatedDate>2026-03-30 21:03:05</termCreatedDate><relation><relationType>UF</relationType><termId>31457276</termId><termName>iron, grey</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31457277</termId><termName>iron, gray</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31438464</termId><termName>cast iron</termName><termType>PT</termType></relation></term>  </Zthes>