<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31317488</termId><termName>laser Doppler vibrometry</termName><termType>PT</termType><termNote><![CDATA[ A technique based on the Doppler-effect for determining vibration velocity and displacement at a fixed point. It uses a two beam laser interferometer measuring the difference in frequency between a test beam and an internal reference beam. ]]></termNote><termCreatedDate>2026-03-30 20:25:29</termCreatedDate><relation><relationType>UF</relationType><termId>31317489</termId><termName>laser Doppler interferometry</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31317490</termId><termName>vibrometry, laser Doppler</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31304542</termId><termName>interferometry</termName><termType>PT</termType></relation></term>  </Zthes>