<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31319794</termId><termName>air-entraining agent</termName><termType>PT</termType><termNote><![CDATA[ Additive to natural cement, concrete, or mortar that causes entrained air to be incorporated into it. ]]></termNote><termCreatedDate>2026-03-30 20:26:11</termCreatedDate><relation><relationType>UF</relationType><termId>31319795</termId><termName>admixture, air-entraining</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31319796</termId><termName>agent, air-entraining</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31319797</termId><termName>air-entraining admixture</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31305843</termId><termName>additive</termName><termType>PT</termType></relation></term>  </Zthes>