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direct method of measurement
eng.geol.	直接测定方法
space	直接测量法
English thesaurus
direct method of measurement
metrol.	A method of measurement in which the value of a measured variable is obtained directly, rather than by measurement of other quantities functionally related to the measured variable. Note: The method of measurement remains direct even if it is necessary to make supplementary measurements to determine the values of influence quantities in order to make corresponding corrections. Example: Measurement of a length using a graduated rule