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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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measurable set valued mapping
measurable set-valued mapping
measurable space
measurable stochastic process
measurable subset
measurable transformation
measurable variable
measurable vector function
measurable vector-valued function
measurand
measuration
measure
measure algebra
measure and conquer
measured
measured Boolean algebra
measured characteristic parameter
measured coordinate
measured curve
measure decomposition
measured lag time
measured redundancy
measured value
measure entropy
measure for mass characteristic of spacecraft
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