<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31301377</termId><termName>isotropy</termName><termType>PT</termType><termNote><![CDATA[ The state or quality of having equal physical properties along all axes. ]]></termNote><termCreatedDate>2026-03-30 20:20:58</termCreatedDate><relation><relationType>UF</relationType><termId>31301378</termId><termName>isotropic</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298128</termId><termName>structure</termName><termType>PT</termType></relation></term>  </Zthes>