<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398566</termId><termName>photoelectric photometers</termName><termType>PT</termType><termNote><![CDATA[ Photometers that rely on the photoelectric effects of photocells, phototransmitters, or phototubes to measure light intensity. ]]></termNote><termCreatedDate>2026-03-30 20:47:09</termCreatedDate><relation><relationType>UF</relationType><termId>31398567</termId><termName>electronic photometers</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398568</termId><termName>electrophotometers</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398569</termId><termName>photoelectric photometer</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398570</termId><termName>photometer, photoelectric</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398571</termId><termName>photometers, electronic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398572</termId><termName>photometers, photoelectric</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358533</termId><termName>photometers</termName><termType>PT</termType></relation></term>  </Zthes>