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单词 general precession
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general precession
general precession n. Astronomy the combination of the lunisolar and the planetary precessions (see precession n.2 1).
ΚΠ
1852 R. Grant Hist. Physical Astron. xvi. 320 The annual value of general precession at 50″·21129.
1949 Proc. Amer. Philos. Soc. 93 533/1 All observations of position are made in a frame which is known to be rotating; the speed of rotation is known as the general precession.
1997 P. Duffett-Smith Easy PC Astron. 48 The reference direction is that of the first point of Aries, so general precession causes these coordinates to change slowly with time.
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