<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31333721</termId><termName>biconvex</termName><termType>PT</termType><termNote><![CDATA[ Two-sided shape that is convex on both sides. ]]></termNote><termCreatedDate>2026-03-30 20:29:56</termCreatedDate><relation><relationType>UF</relationType><termId>31333722</termId><termName>bi-convex</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31311816</termId><termName>curved</termName><termType>PT</termType></relation></term>  </Zthes>