epicycles
plural of epicycle
(physics) A wave that can be modulated, either in amplitude, frequency, or phase, to carry or transmit images, music, speech, or other signals.
plural of draught-house
(zoology) Any fish of the superorder Acanthopterygii.
中世の天文学者たちは、惑星の見かけの運動を説明するためにモデルに周転円を加えた。
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