retractive
(astronomy, now historical) Designating the four largest moons of Jupiter (Io, Europa, Ganymede and Callisto), as named by Galileo in honour of his future patron Cosimo II de' Medici.
That which retracts or withdraws.
plural of cestode
(mineralogy) A monoclinic-sphenoidal lead gray mineral containing arsenic, lead, and sulfur.
点検中、技術者はハッチをロックする役割を果たしている引き戻し機構を特定し、交換を指示した。
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