nutationn.
英 njuː'teɪʃ(ə)n | 美 njʊ'teʃən
中文n. [力][天] 章动；点头，垂头
词根词源
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.
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