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单词 mean noon
释义

Definition of mean noon in English:

mean noon

noun
Astronomy
  • Noon as calculated by the motion of the mean sun; the moment at which the centre of the mean sun crosses either the local or the standard meridian.

Origin

Mid 18th century; earliest use found in John Robertson (1690–1761).

Definition of mean noon in US English:

mean noon

noun
Astronomy
  • Noon as calculated by the motion of the mean sun; the moment at which the centre of the mean sun crosses either the local or the standard meridian.

Origin

Mid 18th century; earliest use found in John Robertson (1690–1761).

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更新时间:2025/1/14 13:10:29