<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31320447</termId><termName>corrosion</termName><termType>PT</termType><termNote><![CDATA[ Substances formed as a result of the process of corrosion. ]]></termNote><termCreatedDate>2026-03-30 20:26:22</termCreatedDate><relation><relationType>UF</relationType><termId>31320448</termId><termName>corrosion products</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31306138</termId><termName>residue materials</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31344359</termId><termName>copper oxalate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31344361</termId><termName>socoformacite</termName><termType>PT</termType></relation></term>  </Zthes>