“lunar libration”的概念、定义、翻译、参考文献-科学参考

单词	lunar libration
释义	lunar libration [`lü·nǝr lī`brā·shǝn] ^ASTRONOMY 1. The effect wherein the face of the moon appears to swing east and west about 8° from its central position each month. Also known as apparent libration in longitude. 2. The state wherein the inclination of the moon's polar axis allows an observer on earth to see about 59% of the moon's surface. Also known as libration in latitude. 3. The small oscillation with which the moon rocks back and forth about its mean rotation rate. Also known as physical libration of the moon.
随便看	Arneth's classification Arneth's count Arneth's formula Arneth's index arnimite Arnold sterilizer Arodoidea arolium aromatic aromatic alcohol aromatic aldehyde aromatic amine aromatic amino acid aromatic hydrocarbon aromatic ketone aromatic nucleus aromatic spirits of ammonia aromatic sulfuric acid aromatic vinegar aromatization arostat process aroyl aroylation ARPA ARPES

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