“astrograph mean time”的概念、定义、翻译、参考文献-科学参考

单词	astrograph mean time
释义	astrograph mean time [`as·trō´graf ¦mēn `tīm] ^ASTRONOMY A form of mean time, used in setting an astrograph; mean-time setting of 1200 occurs when the local hour angle of Aries is 0°.
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