Jisho

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しょうどう 章動
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Noun, Noun which may take the genitive case particle 'no'
1. nutation​Astronomy
Wikipedia definition
2. Nutation​Nutation is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behavior of a mechanism. A pure nutation is a movement of a rotational axis such that the first Euler angle is constant.
Read “Nutation” on English Wikipedia
Read “章動” on Japanese Wikipedia
Read “Nutation” on DBpedia

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