nutation

英 [njuː'teɪʃ(ə)n] 美 [njʊ'teʃən]
  • n. [力][天] 章动；点头，垂头
nutation
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英语词源

nutation (n.)
1610s, "action of nodding," from Latin nutationem (nominative nutatio), noun of action from past participle stem of nutare "to nod," from PIE *neu- "to nod" (see numinous). Astronomical use is from 1715. Related: Nutational.

权威例句

1. A parameter design method of nutation cross - feedback control is investigated.
研究了章动交叉反馈校正的参数设计方法.

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2. People who have this nutation mutation need less sleep than others.
有这种变异基因的人睡到比别人少.

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3. In this paper, some deficiencies in nutation theory are discussed.
本文讨论了IAU章动理论的某些缺陷.

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4. People who have nutation this mutation need less sleep than other'sothers.
有这种变异基因的人们比常人少眠.

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5. The international research progress of the non - rigid Earth nutation is reviewed briefly.
对目前国际上有关 非 刚体地球章动研究的进展作了简要回顾.

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[ nutation 造句 ]