“mean noon”的概念、定义、翻译、参考文献-科学参考

单词	mean noon
释义	mean noon [`mēn `nün] ^ASTRONOMY Twelve o'clock mean time, or the instant the mean sun is over the upper branch of the meridian; it may be either local or Greenwich, depending upon the reference meridian.
随便看	cautery caution area cautionary characteristic cautious control direct reading direct-reading gage direct recording direct-reduction process direct reflection direct repeat direct resistance-coupled amplifier direct return system directrix direct route direct scanning direct scattering theory direct screen halftone direct sequence system direct solar radiation direct stratification direct stroke direct sum direct support artillery direct symbol recognition direct tide

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