英语词汇“observational day”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	observational day
释义	observational day observational day [‚äb·zər′vā·shən·əl ¦dā] (geophysics) Any 24-hour period selected as the basis for climatological or hydrological observations.
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