nutation是什麽意思

nutation

英 [njuː'teɪʃ(ə)n] 美 [njʊ'teʃən]

n. [力][天] 章動；點頭，垂頭

英文詞源

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.

雙語例句

1. A parameter design method of nutation cross - feedback control is investigated.: 研究了章動交叉反饋校正的參數設計方法.

2. People who have this nutation mutation need less sleep than others.: 有這種變異基因的人睡到比別人少.

3. In this paper, some deficiencies in nutation theory are discussed.: 本文討論了IAU章動理論的某些缺陷.

4. People who have nutation this mutation need less sleep than other'sothers.: 有這種變異基因的人們比常人少眠.

5. The international research progress of the non - rigid Earth nutation is reviewed briefly.: 對目前國際上有關非剛體地球章動研究的進展作了簡要回顧.

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