<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398332</termId><termName>mass spectroscopes</termName><termType>PT</termType><termNote><![CDATA[ Instruments used to measure the masses of small, electrically charged particles. ]]></termNote><termCreatedDate>2026-03-30 20:47:05</termCreatedDate><relation><relationType>UF</relationType><termId>31398333</termId><termName>mass spectroscope</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398334</termId><termName>spectroscopes, mass</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358259</termId><termName>mass measuring devices</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31428096</termId><termName>mass spectrographs</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31428100</termId><termName>mass spectrometers</termName><termType>PT</termType></relation></term>  </Zthes>