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词汇 libration
释义 li·bra·tion AHD[lī-brāʹshən] D.J.[laɪˈbreɪʃən]K.K.[laɪˈbreʃən]n.(名词)
  1. A very slow oscillation, real or apparent, of a satellite as viewed from the larger celestial body around which it revolves.天平动:卫星的真正或是表面上的缓慢摆动,可以从卫星所公转的较大天体上观测到
Etymology语源
    1. Latin lībrātio lībrātiōn- [oscillation] 拉丁语 lībrātio lībrātiōn- [摆动]
    1. from lībrātus [past participle of] lībrāre [to balance] 源自 lībrātus lībrāre的过去分词 [使平衡]
    1. from lībra [balance] 源自 lībra [平衡]
Related Forms继承用法libraʹtional adj.(形容词)liʹbrato'ry AHD[-brə-tôr'ē, -tōr'ē] (形容词)
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