<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31377218</termId><termName>cathode ray tubes</termName><termType>PT</termType><termNote><![CDATA[ Vacuum tubes that contain one or more electron guns and a phosphorescent screen; used to display images. ]]></termNote><termCreatedDate>2026-03-09 20:46:34</termCreatedDate><relation><relationType>UF</relationType><termId>31377219</termId><termName>CRT</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377220</termId><termName>cathode ray tube</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377221</termId><termName>cathode-ray tubes</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377222</termId><termName>tubes, cathode ray</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31346865</termId><termName>vacuum tubes</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31413129</termId><termName>television camera tubes</termName><termType>PT</termType></relation></term>  </Zthes>