<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31374351</termId><termName>air-entrained mortar</termName><termType>PT</termType><termNote><![CDATA[ Mortar containing minute, regularly shaped air bubbles that improve its workability and frost resistance. ]]></termNote><termCreatedDate>2026-03-30 20:40:57</termCreatedDate><relation><relationType>UF</relationType><termId>31374352</termId><termName>air-entrained mortars</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31374353</termId><termName>air-entraining mortar</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31374354</termId><termName>mortar, air-entrained</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344144</termId><termName>mortar by property</termName><termType>PT</termType></relation></term>  </Zthes>