单词	diurnal variation
释义	diurnal variation Thesaurus Noun 1. diurnal variation - fluctuations that occur during each dayvariation, fluctuation - an instance of change; the rate or magnitude of change diurnal variation diurnal variation [dī′ərn·əl ‚ver·ē′ā·shən] (geophysics) Daily variations of the earth's magnetic field at a given point on the surface, with both solar and lunar periods having their source in the horizontal movements of air in the ionosphere. diurnal variation Related to diurnal variation: diurnal variation of temperature noun Words related to diurnal variation noun fluctuations that occur during each day Related Words variation fluctuation
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