“precessional”的英文意思_释义_用法

单词

precessional

释义

precessional, a. Astron. and Physics.|prɪˈsɛʃənəl|
[f. precession + -al¹.]
Of, pertaining to, or connected with precession (see precession 3, 3 b).
1827G. Higgins Celtic Druids 10 They discovered the great zodiacal or precessional year of 25,920 years.1866Proctor Handbk. Stars 4 Corrections due to the precessional motions.1879Thomson & Tait Nat. Phil. I. i. §345 The second class..may be called precessional because the precession of the equinoxes, and the slow precession of a rapidly spinning top supported on a very fine point, are familiar instances of it.1882Proctor in Knowledge No. 11. 218 Writers will often speak of the precessional reeling of the earth. The reeling itself is, of course, not precessional, it is but the cause of precession.

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