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外差激光干涉测量
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外差激光干涉测量
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外差激光干涉测量
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heterodyne laser interferometer
外差激光干涉测量
干涉光路中测量光和参考光波长(频率)不同,存在一个较小的频差,通过光路设计,使测量光与参考光相互干涉获得干涉信号,其本质是以激光波长作为测量基准,通过监测激光在参考臂、测量臂中光程差、相位差或频差的变化,获得被测目标的位移量或位移相关量。
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environmental health impact assessment
environmental health in military position
environmental health map
Environmental Health Perspectives
environmental health promotion
environmental health risk assessment
environmental health standard
environmental health supervision and management
environmental health survey
environmental heterogeneity
environmental heterogeneity in the invaded range
Environmental History
environmental history
environmental hormone
environmental hydraulic engineering
environmental hydraulics
environmental hydrogeology
environmental hydrology
environmental identity
environmental illegal activity
environmental illumination
environmental image
Environmental Impact Assessment Engineer
environmental impact assessment for planning
Environmental Impact Assessment Law
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