<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398340</termId><termName>aerometers</termName><termType>PT</termType><termNote><![CDATA[ Instruments for determining the weight or density of air or other gases. ]]></termNote><termCreatedDate>2026-03-30 20:47:05</termCreatedDate><relation><relationType>UF</relationType><termId>31398341</termId><termName>aerometer</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358333</termId><termName>weighing devices by function</termName><termType>PT</termType></relation></term>  </Zthes>